Automotive External Aerodynamics Tutorial

Use HyperMesh CFD to perform an external aerodynamic analysis of a vehicle.

Before you begin, copy the file(s) used in this tutorial to your working directory.

Post-Processing

Solution and Environment Selection

When opening HyperMesh CFD, the Create Session Dialog will appear. Select the Aerodynamics and Aeroacoustics solution and the Post-Processing environment.

Note: You may also select the solution and the environment directly from HMCFD by selectingFile > Solution > Aerodynamics and Aeroacoustics. You may then select the Geometry Repair environment by selecting from the drop-down to the right of View.

Time-Averaged fullData Results

ultraFluidX (uFX) provides its results output in multiple folders which correspond to the output types. The standard output is placed in the uFX_fullData folder. Depending on your selected output format, you will find either .sos or.h3d files within. This tutorial assumes the Ensight Gold format was selected.

Create Boundary Groups

Vehicle

From the Post ribbon, click on the Boundary Groups tool.

Figure 2.

The Boundary Groups guide bar opens.
From the Boundary Groups guide bar, click on the button to open the Advanced Selection dialog box.

Figure 3.

The Advanced Selection Dialog Box opens.
Click on the down arrow of the drop-down menu and select By Boundaries.
Press the checked box icon to select all.
In the search box, type Belt_, then press the empty box icon to unselect the boundaries with names containing the string: “Belt_”.
Close the Advanced Selection Dialog Box. The Display Properties Dialog opens in the Surface Coloring tab. Figure 7: Display Properties Dialog – Surface Coloring Tab

Figure 4.
Select Constant from the Display drop-down menu.
Press the green check mark in the Boundary Groups guide bar.
A new boundary Group is created.
From the Post Browser, find the newly created Boundary Group in Standard Output > Boundary Collections > Flow Boundaries by using the search utility or by browsing through the tree (it will be at the bottom).
Right-click on the newly created Boundary Group and click on Rename. Rename as Vehicle.
Right-click on Vehicle and click on Info to save the surface information of the newly created Boundary Group as Vehicle.csv.
From the Post Browser, right-click on Standard Output > Boundary Collections > Flow Boundaries and click on Delete Empty Boundary Groups.

Belts

From the Post Browser, group select the remaining flow boundaries which are not Vehicle, right click and select Create Boundary Group. Rename the newly created group as Belts.
Repeat Step 12.
Right-click on the Belts boundary group and Hide.

View Setup

Reference Iso-Surfaces

CpT

From the Post ribbon, click on the Iso-Surfaces tool.

Figure 5.

Figure 6.

The Iso-Surfaces guide bar and Iso-Function guide panel open.
From the Iso-Function guide panel, set the Iso Variable to time_avg_total_pressure_coefficient and the Iso Value to 0.1, then press the Calculate button.
The Display Properties micro-dialog opens in the Surface Coloring tab.
From the Display Properties dialog, Surface Coloring tab, set the Display value to constant.
From the Iso-Surfaces guide bar, click on the green check mark to accept.
From the Post Browser, under Visualizations > Iso-Surfaces, right click on the newly created Iso-Surface and rename as CpT, then hide.

Cp+

Repeat Steps 1-5, setting the Iso Variable to time_avg_pressure_coefficient, the Iso Value to 0.5, and renaming the newly created iso-surface to Cp+.

Cp-

Repeat Steps 1-5, setting the Iso Variable to time_avg_pressure_coefficient, the Iso Value to -0.3, and renaming the newly created iso-surface to Cp-.

Views

Standard

From the View Orientation tool, click on Left.

Figure 7.
From the bottom left corner of the Viewer, click on the Store/Recall Views button.

Figure 8.

The Views Tool opens.
Rename the newly created View as Left.
Drag the Views tool to the top left corner of the screen.
Cycle through the Right, Front, Rear, Top, Bottom, Front-Left, Front-Right, Rear-Left, Rear-Right, Front-Top-Left, Front-Top-Right, Rear-Top-Left, Rear-Top-Right, Front-Bottom-Left, Front-Bottom-Right, Rear-Bottom-Left, and Rear-Bottom-Right orientations. After selecting an orientation, click on the Capture Current View button in the Views tool to capture the View and rename it accordingly.

Front Half

From the Post Browser, under Visualizations > Clips, right click on X-Clip Vehicle Center | Front and click Show.
Cycle through the Left, Top and Bottom orientations, saving the views and renaming them accordingly, adding “ | Front” to the end of each.
From the Post Browser, under Visualizations > Clips, right click on X-Clip Vehicle Center | Front and click Hide.

Rear Half

From the Post Browser, under Visualizations > Clips, right click on X-Clip Vehicle Center | Rear and click Show.
Cycle through the Left, Top and Bottom orientations, saving the views and renaming them accordingly, adding “ | Rear” to the end of each.
From the Post Browser, under Visualizations > Clips, right click on X-Clip Vehicle Center | Rear and click Hide.

Wide

From the Post Browser, navigate to Standard Output > Visualizations > Iso-Surfaces and show all Reference Iso-Surfaces.
Cycle through the Left, Right, Front, Rear, Top, Bottom, Front-Left, Front-Right, Rear-Left, Rear-Right, Front-Top-Left, Front-Top-Right, Rear-Top-Left, Rear-Top-Right, Front-Bottom-Left, Front-Bottom-Right, Rear-Bottom-Left, and Rear-Bottom-Right orientations, saving the views and renaming them accordingly, adding “Wide | ” to the beginning of each.

Wide | Front Half

From the Post Browser, under Visualizations > Clips, right click on X-Clip Reference Iso-Surfaces | Front and click Show.
Cycle through the Left, Top and Bottom orientations, saving the views and renaming them accordingly, adding “Wide |” to the start and “ | Front” to the end of each.
From the Post Browser, under Visualizations > Clips, right click on X-Clip Reference Iso-Surfaces | Front and click Hide.

Wide | Rear Half

From the Post Browser, under Visualizations > Clips, right click on X-Clip Reference Iso-Surfaces | Rear and click Show.
Cycle through the Left, Top and Bottom orientations, saving the views and renaming them accordingly, adding “Wide |” to the start and “ | Rear” to the end of each.
From the Post Browser, under Visualizations > Clips, right click on X-Clip Reference Iso-Surfaces | Rear and click Hide.
From the Post Browser, navigate to Standard Output > Visualizations > Iso-Surfaces and hide all reference Iso-Surfaces.

Image and Video Capture

To capture the image on the viewer, from the menu bar, click File > Screen Capture > Image to File.
To capture a video by cycling through the results frames of the results shown on the viewer, from the menu bar, click File > Screen Capture > Video to File.

Surface Results

Cp (Time-Averaged)

From the Post Browser, under Boundary Collections > Flow Boundaries, right click on Vehicle and click Edit.
The Display Properties dialog – Surface Coloring tab opens.
From the Display Properties dialog – Surface Coloring tab, set the Display value to time_avg_pressure_coefficient.
Set the Legend Type to Global.
Toggle-on the Legend button.
Set the Legend range from -1 to 1.
Press the Legend button.

Figure 9.

The Legend micro-dialog opens.
From the Legend micro-dialog, click on Colormap and under Name, change the value to Cool to Warm (Extended).
From the Legend micro-dialog, click on Title, type Cp (time-averaged) in the Title field and check the Horizontal title check box.
From the Legend micro-dialog, click on Format. Change the Precision value to 2 and the Colorbar labels value to Floating point.
From the Legend micro-dialog, click on Display. Change the position to Upper Right Corner by clicking on the Upper Right Corner button, set the Orientation to Horizontal, and change the Length value to 0.2.
From the Display Properties micro-dialog, switch to the Contour Line Display tab (third from the left on top).

Figure 10.
From the Display Properties Dialog – Contour Line Display Tab, toggle the Display button and set the Display value to 5.
Set the value of Variable to time_avg_pressure_coefficient.
Set the Contour Range from -1 to 1 and set Color to constant.
From the Boundary Groups guide bar, click on the green check mark to accept.
Cycle through the Left, Top, Bottom, Front, Rear views and capture images for each.

Cp (time-averaged) – Narrow Range

From the Post Browser, under Boundary Collections > Flow Boundaries, right click on Vehicle and click Edit.
The Display Properties Dialog – Surface Coloring tab opens.
Set the Legend range from -0.3 to 0.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab (third from the left on top).
Set the Display value to 7.
Set the Contour Range from -0.3 to 0.
From the Boundary Groups Guide Bar, click on the green check mark to accept.
Cycle through the Rear, Top, Bottom, Front, Rear, Front-Bottom-Right, Front-Bottom-Left, Rear-Bottom-Right, Rear-Bottom-Left views and capture images for each.

Cf (Time-Averaged)

From the Post Browser, under Boundary Collections > Flow Boundaries, right click on Vehicle and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From Display Properties Dialog – Surface Coloring Tab, set the Display value to time_avg_skin_friction_coefficient.
Set the Legend Type to Global.
Set the Legend range from 0 to 0.005.
Press the Legend button.
The Legend Micro-Dialog opens.
From the Legend Micro-Dialog, click on Colormap and under Name, change the value to Inferno.
From the Legend Micro-Dialog, click on Title, type Cf (time-averaged) in the Title field and check the Horizontal title check box.
From the Legend Micro-Dialog, click on Format. Change the Precision value to 1 and set the Colorbar labels value to Exponential.
From the Legend Micro-Dialog, click on Display. Change the position to Upper Right Corner by clicking on the Upper Right Corner button, set the Orientation to Horizontal, and change the Length value to 0.2.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab (third from the left on top).
Toggle-on Display and set the value to 6.
Set the value of Variable to time_avg_skin_friction_coefficient.
Set the Contour Range from 0 to 0.005, select constant from the Color drop-down, and set the color to white.
From the Boundary Groups Guide Bar, click on the green check mark to accept.
Cycle through the Rear, Top, Bottom, Front, and Rear views and capture images for each.

Cf (Time-Averaged) – Narrow Range

From the Post Browser, under Boundary Collections > Flow Boundaries, right click on Vehicle and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
Set the Legend range from 0 to 0.003.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab (third from the left on top).
Set the Display value to 7.
Set the Contour Range from -0 to 0.003.
From the Boundary Groups Guide Bar, click on the green check mark to accept.
Cycle through the Rear, Top, Bottom, Front, Rear, Front-Bottom-Right, Front-Bottom-Left, Rear-Bottom-Right, Rear-Bottom-Left, Top | Front, Bottom | Front, Top | Rear, and Bottom | Rear views and capture images for each.

Surface Velocity BC

From the Post Browser, under Boundary Collections > Flow Boundaries, right click on Vehicle and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
Set the Display value to velocity.
Set the Legend Type to Global.
Click on the lightning button of the Legend field to Reset Range.
Press the Legend menu button.
The Legend Micro-Dialog opens.
From the Legend Micro-Dialog, click on Title, type Surface Velocity BC in the Title field and check the Horizontal title check box.
From the Legend Micro-Dialog, click on Format. Change the Precision value to 2 and set the Colorbar labels value to Floating point.
From the Legend Micro-Dialog, click on Display. Change the position to Upper Center by clicking on the Upper Center button, set the Orientation to Horizontal, and change the Length value to 0.3.
From the Legend Micro-Dialog, click on Colormap, then check the Scalar based opacity checkbox, and click on the menu next to it.

Figure 11.

The Scalar Based Opacity Dialog opens.
From the Scalar Based Opacity Dialog, make sure the Opacity type is set to Normalized, and the User defined range checkbox is checked.
From the Scalar Based Opacity Dialog, click on the Plus button to add a row to the table (there should now be three) and set the values as shown in Figure 18.
Close the Scalar Based Opacity Dialog.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab and toggle off the Display field.
From the Boundary Groups Guide Bar, click on the green check mark to accept.
From the Post Browser, under Boundary Collections > Flow Boundaries, right click on Belts and click Show.
From the Post Browser, under Boundary Collections > Flow Boundaries, right click on Belts and click Edit. The Display Properties Dialog – Surface Coloring Tab opens.
Set the Display value to velocity.
Set the Legend Type to Global.
From the Boundary Groups Guide Bar, click on the green check mark to accept.
From the Post ribbon, click on the Surface Streamlines Tool.

Figure 12.

The Surface Streamlines Guide Bar opens.
From the Surface Streamlines Guide Bar, set the selector type to Boundary Groups, then use the Advanced Selection Tool tool to select the Vehicle and Belts boundary groups.

Note: You must close the Advanced Selection Tool for the selection to apply.
From the Surface Streamlines Guide Bar, click on the Seeds button. The Seeds Micro-Dialog opens.

Figure 13.
From the Seeds Micro-Dialog, set the Target point count to 3000.
From the Seeds Micro-Dialog, click on the hamburger menu expander.

Figure 14.

The Generation Method Micro-Dialog opens.
From the Generation Method Micro-Dialog, set the Vector variable to velocity and the Integration direction to both.
From the Seeds Micro-Dialog, click on Calculate. The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, toggle off Display.
From the Display Properties Micro-Dialog, switch to the Vector Display Tab.

Figure 15.

The Display Properties Micro-Dialog – Vector Display Tab opens.
From the Display Properties Micro-Dialog – Vector Display Tab, toggle on the display button. Set the Display value to velocity, the Vector scale factor to 0.1.
Set Color to constant and set the color to black.
Toggle the Subset button and move the slider all the way to the left.
Click on the hamburger menu in the Display row to expand the Vector Specifications Micro-Dialog.

Figure 16.
From the Vector Specifications Micro-Dialog, set the Vector length to Uniform.
From the Surface Streamlines Guide Bar, click on the green check mark to accept.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on the newly created Surface Streamlines and rename as Vehicle_and_Belts.
Capture an image using the Front-Top-Left view.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on Vehicle_and_Belts and click Hide.
From the Post Browser, under Standard Output > Boundaries > Flow Boundaries, right click on Belts and click Hide.
From the Post Browser, right click on Legend Manager, then click on Edit.

Figure 17.

The Legend Manager Micro-Dialog opens.
From the Legend Manager Micro-Dialog, for the Legend Variable velocity, toggle off the Legend.
Press Esc key on the keyboard or right-click on the viewer and swipe left to exit the Legend Manager Micro-Dialog.

Surface Streamlines

From the Post Browser, under Boundary Collections > Flow Boundaries, right click on Vehicle and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Display value to constant.
From the Boundary Groups Guide Bar, click on the green check mark to accept.
From the Post ribbon, click on the Surface Streamlines Tool.
The Surface Streamlines Guide Bar opens.
From the Surface Streamlines Guide Bar, set the selector type to Boundary Groups, then click on any surface of the Vehicle boundary group to select.
From the Surface Streamlines Guide Bar, click on the Seeds button.
The Seeds Micro-Dialog opens.
From the Seeds Micro-Dialog, set the Target point count to 3000.
From the Seeds Micro-Dialog, click on the hamburger menu expander.
The Generation Method Micro-Dialog opens.
From the Generation Method Micro-Dialog, set the Vector variable to time avg wall shear stress and the Integration direction to both.
From the Seeds Micro-Dialog, click on Calculate.
The Display Properties Dialog – Surface Coloring Tab opens.
From Display Properties Dialog – Surface Coloring Tab, set the Display value to time_avg_skin_friction_coefficient.
Press the Display hamburger menu button and set the Tube radius to 1.
Set the Legend Type to Global.
Set the Legend Type to Global.
Toggle-on the Legend button.
Set the Legend range from 0 to 0.005.
From the Surface Streamlines Guide Bar, click on the green check mark to accept.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on the newly created Surface Streamlines and rename as Vehicle.
Cycle through the Rear, Top, Bottom, Front, Rear, Front-Bottom-Right, Front-Bottom-Left, Rear-Bottom-Right, Rear-Bottom-Left, Top | Front Half, Bottom | Front Half, Top | Rear, and Bottom | Rear views and capture images for each.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on Vehicle and click Hide.

Slice Planes

Y Slices

Y-Slice Vehicle Center

Cp (Time-Averaged)

From the Post ribbon, click on the Slice Planes Tool.

Figure 18.

The Slice Planes Guide Bar opens.
X, Y, and Z Planes are drawn along the centroid of the vehicle.

Figure 19.
Click on the Y-Plane.

Figure 20.

The Slice Plane Micro-Dialog opens.
From the Slice Plane Micro-Dialog, check Finite slice, then expand the Micro-Dialog by clicking on the Fold Frame button on the top-right corner and set the Length and Width to 9 and 3 respectively.

Figure 21.
Press Calculate.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Display value to time_avg_pressure_coefficient.
Set the Legend range from -1.0 to 1.0
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
From the Display Properties Dialog – Contour Line Display Tab, toggle-on the Display button.
Set the Display value to 11.
Set the Variable value to time_avg_pressure_coefficient and the Contour range to -1.0 to 1.0.
Select constant from the Color drop-down and set the color to black.
From the Slice Plane Guide Bar, click on the green check mark to accept.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on the newly created Slice Plane and rename to Y-Slice Vehicle Center.
From the Post Browser, under Standard Output > Boundary Collections > Flow Boundaries, right click on Vehicle and click Edit.
Set transparency to 50% by moving the transparency slider to the middle position.
From the Boundary Groups Guide Bar, click on the green check mark to accept.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on Y-Clip Vehicle Center | Right and click Show.
Cycle through the Wake | Left , Left | Front, and Wake | Left | Rear views and capture images for each.

Cp (Time-Averaged, Narrow)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Y-Slice Vehicle Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Legend range from -0.3 to 0.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
From the Display Properties Dialog – Contour Line Display Tab, set the Display value to 7, and the Contour range to -0.3 to 0.
Repeat Steps 13 and 19.

Cv (Time-Averaged)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Y-Slice Vehicle Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Display value to time_avg_velocity_magnitude_coefficient.
Set the Legend Type to Global.
Toggle-on the Legend button.
Set the Legend range to 0 to 1.2.
Press the Legend hamburger menu button.
The Legend Micro-Dialog opens.
From the Legend Micro-Dialog, click on Colormap and under Name, change the value to Cool to Warm (Extended)
From the Legend Micro-Dialog, click on Title, type Cv (time-averaged) in the Title field.
From the Legend Micro-Dialog, click on Format. Change the Precision value to 2 and the Colorbar labels value to Floating point.
From the Legend Micro-Dialog, click on Display. Change the position to Upper Right Corner by clicking on the Upper Right Corner button, set the Orientation to Horizontal, and change the Length value to 0.2.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
From the Display Properties Dialog – Contour Line Display Tab, toggle-on the Display button.
Set the Display value to 7.
Set the Variable value to time_avg_velocity_magnitude_coefficient, and the Contour range to 0 to 1.2.
Select constant from the Color drop-down and set the color to black.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Cycle through the Wake | Left , Left | Front, and Wake | Left | Rear views and capture images for each.

Cv (Time-Averaged) + Streamlines

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Y-Slice Vehicle Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
From the Display Properties Dialog – Contour Line Display Tab, toggle-off the Display button.
From the Post ribbon, click on the Surface Streamlines Tool.
From the Surface Streamlines Guide Bar, set the selector type to Slice Planes, then click on the Y-Slice Vehicle Center slice plane.
From the Surface Streamlines Guide Bar, click on the Seeds button.
The Seeds Micro-Dialog opens.
From the Seeds Micro-Dialog, set the Target point count to 1000.
From the Seeds Micro-Dialog, click on the hamburger menu expander.
The Generation Method Micro-Dialog opens.
From the Generation Method Micro-Dialog, set the Vector variable to time avg velocity and the Integration direction to both.
From the Seeds Micro-Dialog, click on Calculate.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Display value to constant and the color to black.
Slide the Transparency bar about 70% to the right.
Click on the Display hamburger menu button and set the Tube radius to 1.
From the Surface Streamlines Guide Bar, click on the green check mark to accept.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on the newly created Surface Streamlines and rename to Y-Slice Vehicle Center.
Cycle through the Wake | Left , Left | Front, and Wake | Left | Rear views and capture images for each.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on Y-Clip Vehicle Center | Right and click Hide.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Y-Slice Vehicle Center and click Hide.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on Y-Slice Vehicle Center and click Hide.

Y-Slice Front Axle Center

Cp (Time-Averaged)

From the Post ribbon, click on the Slice Planes Tool.
The Slice Planes Guide Bar opens.
Click on the Y-Plane.
The Slice Plane Micro-Dialog opens.
From the Slice Plane Micro-Dialog, check Finite slice, then expand the Micro-Dialog by clicking on the Fold Frame button on the top-right corner and set the Length and Width to 9 and 3 respectively.
From the Slice Plane Micro-Dialog, click on the Show move tool button, then click on the Y-Arrow. In the Y field, enter -0.82434, then middle click on the screen.
Display Properties Dialog – Surface Coloring Tab opens.
Repeat Steps 6-13.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on the newly created Slice Plane and rename to Y-Slice Front Axle Center.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on Y-Clip Vehicle Front Axle Center | Right and click Show.
Cycle through the Wake | Left , Left | Front, and Wake | Left | Rear views and capture images for each.

Cp (Time-Averaged, Narrow)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Y-Slice Front Axle Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Legend range from -0.3 to 0.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
From the Display Properties Dialog – Contour Line Display Tab, set the Display value to 7, and the Contour range to -0.3 to 0.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Cycle through the Wake | Left , Left | Front, and Wake | Left | Rear views and capture images for each.

Cv (Time-Averaged)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Y-Slice Front Axle Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Display value to time_avg_velocity_magnitude_coefficient, and the Legend range to 0 to 1.2.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Variable value to time_avg_velocity_magnitude_coefficient, and the Contour range to 0 to 1.2.
From the Slice Plane Guide Bar, click on the green check mark to accept. 6. Cycle through the Wake | Left , Left | Front, and Wake | Left | Rear views and capture images for each.

Cv (Time-Averaged) + Streamlines

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Y-Slice Vehicle Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
From the Display Properties Dialog – Contour Line Display Tab, toggle-off the Display button.
From the Post ribbon, click on the Surface Streamlines Tool.
From the Surface Streamlines Guide Bar, set the selector type to Slice Planes, then click on the Y-Slice Front Axle Center slice plane.
Repeat Steps 6-14.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on the newly created Surface Streamlines and rename to Y-Slice Front Axle Center.
Cycle through the Wake | Left , Left | Front, and Wake | Left | Rear views and capture images for each.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on Y-Clip Vehicle Front Axle Center | Right and click Hide.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Y-Slice Front Axle Center and click Hide.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on Y-Slice Front Axle Center and click Hide.

Z-Slices

Z-Slice Vehicle Center

Cp (Time-Averaged)

From the Post ribbon, click on the Slice Planes Tool.
The Slice Planes Guide Bar opens.
Click on the Z-Plane.
The Slice Plane Micro-Dialog opens.
Repeat Steps 4-13.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on the newly created Slice Plane and rename to Z-Slice Vehicle Center.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on Z-Clip Vehicle Center | Bottom and click Show.
Select the Top Wake | Bottom view and capture an image.

Cp (Time-Averaged, Narrow)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Z-Slice Vehicle Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Legend range from -0.3 to 0.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
From the Display Properties Dialog – Contour Line Display Tab, set the Display value to 7, and the Contour range to -0.3 to 0.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Top Wake | Bottom view and capture an image.

Cv (Time-Averaged)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Z-Slice Vehicle Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Display value to time_avg_velocity_magnitude_coefficient, and the Legend range to 0 to 1.2.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Variable value to time_avg_velocity_magnitude_coefficient, and the Contour range to 0 to 1.2.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Top Wake | Bottom view and capture an image.

Cv (Time-Averaged) + Streamlines

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Y-Slice Vehicle Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
From the Display Properties Dialog – Contour Line Display Tab, toggle-off the Display button.
From the Post ribbon, click on the Surface Streamlines Tool.
From the Surface Streamlines Guide Bar, set the selector type to Slice Planes, then click on the Z-Slice Vehicle Center slice plane.
Repeat Steps 6-14.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on the newly created Surface Streamlines and rename to Z-Slice Vehicle Center.
Select the Top Wake | Bottom view and capture an image.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on Z-Clip Vehicle Center | Bottom and click Hide.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Z-Slice Vehicle Center and click Hide.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on Z-Slice Vehicle Center and click Hide.

Z-Slice Front Axle Center

Cp (Time-Averaged)

From the Post ribbon, click on the Slice Planes Tool.
The Slice Planes Guide Bar opens.
Click on the Z-Plane.
The Slice Plane Micro-Dialog opens.
From the Slice Plane Micro-Dialog, check Finite slice, then expand the Micro-Dialog by clicking on the Fold Frame button on the top-right corner and set the Length and Width to 9 and 3 respectively.
From the Slice Plane Micro-Dialog, press the Show Vector Tool button.

Figure 22.

The Vector Tool opens.
From the Vector Tool, press the Show Handle Coordinates button (XYZ) to toggle to the handle coordinates inputs as shown in Figure 29.
Set the Z-Coordinate to 0.368879.

Note: The value of 0.368879 pertains to the z-midpoint of the front-left tire. You may calculate this value from the data contained in Wheel_Tire_Front_Left.csv, which was created following the steps in the Save Boundary Information section.
Middle-click to accept the changes.
Repeat Steps 6-11.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on the newly created Slice Plane and rename to Z-Slice Front Axle Center.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on Y-Clip Vehicle Front Axle Center | Right and click Show.
Cycle through the Wake | Left , Left | Front, and Wake | Left | Rear views and capture images for each.

Cp (Time-Averaged, Narrow)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Z-Slice Front Axle Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
Set the Legend range from -0.3 to 0.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Contour Range from -0.3 to 0.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Top Wake | Bottom view and capture an image.

Cv (time-averaged)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Z-Slice Front Axle Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Display value to time_avg_velocity_magnitude_coefficient, and the Legend range to 0 to 1.2.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Variable value to time_avg_velocity_magnitude_coefficient, and the Contour range to 0 to 1.2.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Top Wake | Bottom view and capture an image.

Cv (time-averaged) + Streamlines

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Y-Slice Vehicle Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
From the Display Properties Dialog – Contour Line Display Tab, toggle-off the Display button.
From the Post ribbon, click on the Surface Streamlines Tool.
From the Surface Streamlines Guide Bar, set the selector type to Slice Planes, then click on the Z-Slice Front Axle Center slice plane.
Repeat Steps 6-14.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on the newly created Surface Streamlines and rename to Z-Slice Front Axle Center.
Select the Top Wake | Bottom view and capture an image.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on Z-Clip Vehicle Center | Bottom and click Hide.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Z-Slice Front Axle Center and click Hide.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on Z-Slice Front Axle Center and click Hide.

Z-Slice Left Mirror Center

Cp (time-averaged)

Repeat Steps 1-5.
Note: Set the Z-Coordinate to 1.03571.Note: The value of 1.03571 pertains to the z-midpoint of the mirrors. You may calculate this value from the data contained in mirrors.csv, which was created following the steps in the Save Boundary Information section.
Middle-click to accept the changes.
Repeat Steps 6-13.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on the newly created Slice Plane and rename to Z-Slice Left Mirror Center.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on Z-Clip Vehicle Mirror Center | and click Show.
Select the Top Wake | Bottom view and capture an image.

Cp (time-averaged, narrow)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Z-Slice Left Mirror Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
Set the Legend range from -0.3 to 0.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Display value to 7.
Set the Contour Range from -0.3 to 0.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Top Wake | Bottom view and capture an image.

Cv (time-averaged)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Z-Slice Left Mirror Center and click Edit. The Display Properties Dialog – Surface Coloring Tab opens.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Display value to time_avg_velocity_magnitude_coefficient, and the Legend range to 0 to 1.2.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Variable value to time_avg_velocity_magnitude_coefficient, and the Contour range to 0 to 1.2.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Top Wake | Bottom view and capture an image.

Cv (time-averaged) + Streamlines

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Y-Slice Vehicle Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
From the Display Properties Dialog – Contour Line Display Tab, toggle-off the Display button.
From the Post ribbon, click on the Surface Streamlines Tool.
From the Surface Streamlines Guide Bar, set the selector type to Slice Planes, then click on the Z-Slice Left Mirror Center slice plane.
Repeat Steps 6-14.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on the newly created Surface Streamlines and rename to Z-Slice Left Mirror Center.
Select the Top Wake | Bottom view and capture an image.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on Z-Clip Vehicle Mirror Center | Top and click Hide.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Z-Slice Left Mirror Center and click Hide.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on Z-Slice Left Mirror Center and click Hide.

Z-Slice Windshield Center

Cp (time-averaged)

Repeat Steps 1-5.
Set the Z-Coordinate to 1.142861.
The value of 1.142861 pertains to the z-midpoint of the windshield. You may calculate this value from the data contained in windshield.csv, which was created following the steps in the Save Boundary Information section.
Middle-click to accept the changes.
Repeat Steps 6-13.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on the newly created Slice Plane and rename to Z-Slice Windshield Center.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on Z-Clip Vehicle Windshield Center | Bottom and click Show.
Select the Top Wake | Bottom view and capture an image.

Cp (time-averaged, narrow)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Z-Slice Windshield Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
Set the Legend range from -0.3 to 0.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Display value to 7.
Set the Contour Range from -0.3 to 0.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Top Wake | Bottom view and capture an image.

Cv (time-averaged)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Z-Slice Windshield Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Display value to time_avg_velocity_magnitude_coefficient, and the Legend range to 0 to 1.2.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Variable value to time_avg_velocity_magnitude_coefficient, and the Contour range to 0 to 1.2.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Top Wake | Bottom view and capture an image.

Cv (time-averaged) + Streamlines

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Y-Slice Vehicle Center and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
From the Display Properties Dialog – Contour Line Display Tab, toggle-off the Display button.
From the Post ribbon, click on the Surface Streamlines Tool.
From the Surface Streamlines Guide Bar, set the selector type to Slice Planes, then click on the Z-Slice Windshield Center slice plane.
Repeat Steps 6-14.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on the newly created Surface Streamlines and rename to Z-Slice Windshield Center.
Select the Top Wake | Bottom view and capture an image.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on Z-Clip Vehicle Windshield Center | Bottom and click Hide.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on Z-Slice Windshield Center and click Hide.
From the Post Browser, under Standard Output > Visualizations > Surface Streamlines, right click on Z-Slice Windshield Center and click Hide.

X-Slices

X-Slice Vehicle -0.45

Cp (time-averaged)

From the Post ribbon, click on the Slice Planes Tool.
The Slice Planes Guide Bar opens.
Click on the X-Plane.
The Slice Plane Micro-Dialog opens.
From the Slice Plane Micro-Dialog, check Finite slice, then expand the Micro-Dialog by clicking on the Fold Frame button on the top-right corner and set the Length and Width to 4 and 3 respectively.
From the Slice Plane Micro-Dialog, click on the Show move tool button, then click on the X-Arrow. In the X field, enter -0.45, then middle click on the screen to accept.
The Display Properties Dialog – Surface Coloring Tab opens.
Repeat Steps 6-13.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on the newly created Slice Plane and rename to X-Slice Vehicle -0.45.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on X-Clip Vehicle -0.45 | Front and click Show.
Select the Rear | Wake view and capture an image.

Cp (time-averaged, narrow)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on X-Slice Vehicle -0.45 and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
Set the Legend range from -0.3 to 0.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Display value to 7.
Set the Contour Range from -0.3 to 0.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Rear | Wake view and capture an image.

Cv (time-averaged)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on X-Slice Vehicle -0.45 and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Display value to time_avg_velocity_magnitude_coefficient, and the Legend range to 0 to 1.2.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Variable value to time_avg_velocity_magnitude_coefficient, and the Contour range to 0 to 1.2.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Rear | Wake view and capture an image.

Cv (time-averaged) + Vectors

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on X-Slice Vehicle -0.45 and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Micro-Dialog, switch to the Vector Display Tab. The Display Properties Micro-Dialog – Vector Display Tab opens.
From the Display Properties Micro-Dialog – Vector Display Tab, toggle the display button. Set the Display value to time_avg_velocity, and the Vector scale factor to 0.003.
Select Color to constant and set the color to black.
Toggle the Subset button and move the slider all the way to the right.
Click on the hamburger menu in the Display row to expand the Vector Specifications Micro-Dialog.
From the Vector Specifications Micro-Dialog, set the Vector component to Tangential.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Rear | Wake view and capture an image.

X-Slice Vehicle -0.90

Cp (time-averaged)

From the Post ribbon, click on the Slice Planes Tool.
The Slice Planes Guide Bar opens.
Click on the X-Plane. The Slice Plane Micro-Dialog opens.
From the Slice Plane Micro-Dialog, check Finite slice, then expand the Micro-Dialog by clicking on the Fold Frame button on the top-right corner and set the Length and Width to 4 and 3 respectively.
From the Slice Plane Micro-Dialog, click on the Show move tool button, then click on the X-Arrow. In the X Field, enter -0.9, then middle click on the screen to accept.
The Display Properties Dialog – Surface Coloring Tab opens.
Repeat Steps 6-13.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on the newly created Slice Plane and rename to X-Slice Vehicle -0.90.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on X-Clip Vehicle -0.9 | Front and click Show. 8. Select the Rear | Wake view and capture an image.

Cp (time-averaged, narrow)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on X-Slice Vehicle -0.90 and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
Set the Legend range from -0.3 to 0.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Display value to 7.
Set the Contour Range from -0.3 to 0.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Rear | Wake view and capture an image.

Cv (time-averaged)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on X-Slice Vehicle -0.90 and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Display value to time_avg_velocity_magnitude_coefficient, and the Legend range to 0 to 1.2.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Variable value to time_avg_velocity_magnitude_coefficient, and the Contour range to 0 to 1.2.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Rear | Wake view and capture an image.

Cv (time-averaged) + Vectors

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on X-Slice Vehicle -0.90 and click Edit.
The Display Properties Dialog – Surface Coloring Tab opens.
Repeat Steps 2-7.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Rear | Wake view and capture an image.

X-Slice Vehicle 1.7

Cp (time-averaged)

From the Post ribbon, click on the Slice Planes Tool. The Slice Planes Guide Bar opens.
Click on the X-Plane.
The Slice Plane Micro-Dialog opens.
From the Slice Plane Micro-Dialog, check Finite slice, then expand the Micro-Dialog by clicking on the Fold Frame button on the top-right corner and set the Length and Width to 4 and 3 respectively.
From the Slice Plane Micro-Dialog, click on the Show move tool button, then click on the X-Arrow. In the X Field, enter 2.05, then middle click on the screen to accept.
The Display Properties Dialog – Surface Coloring Tab opens.
Repeat Steps 6-13.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on the newly created Slice Plane and rename to X-Slice Vehicle 1.7.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on X-Clip Vehicle 2.15 | Front and click Show.
Select the Rear | Wake view and capture an image.

Cp (time-averaged, narrow)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on X-Slice Vehicle 1.7 and click Edit. The Display Properties Dialog – Surface Coloring Tab opens.
Set the Legend range from -0.3 to 0.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Display value to 7.
Set the Contour Range from -0.3 to 0.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Rear | Wake view and capture an image.

Cv (time-averaged)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on X-Slice Vehicle 1.7 and click Edit. The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Display value to time_avg_velocity_magnitude_coefficient, and the Legend range to 0 to 1.2.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Variable value to time_avg_velocity_magnitude_coefficient, and the Contour range to 0 to 1.2.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Rear | Wake view and capture an image.

Cv (time-averaged) + Vectors

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on X-Slice Vehicle 1.7 and click Edit. The Display Properties Dialog – Surface Coloring Tab opens.
Repeat Steps 2-7.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Rear | Wake view and capture an image.

X-Slice Vehicle 2.15

Cp (time-averaged)

From the Post ribbon, click on the Slice Planes Tool. The Slice Planes Guide Bar opens.
Click on the X-Plane. The Slice Plane Micro-Dialog opens.
From the Slice Plane Micro-Dialog, check Finite slice, then expand the Micro-Dialog by clicking on the Fold Frame button on the top-right corner and set the Length and Width to 4 and 3 respectively.
From the Slice Plane Micro-Dialog, click on the Show move tool button, then click on the X-Arrow. In the X field, enter 2.5, then middle click on the screen to accept. The Display Properties Dialog – Surface Coloring Tab opens.
Repeat Steps 6-13.
From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on the newly created Slice Plane and rename to X-Slice Vehicle 2.15.
From the Post Browser, under Standard Output > Visualizations > Clips, right click on X-Clip Vehicle 2.15 | Front and click Show.
Select the Rear | Wake view and capture an image.

Cp (time-averaged, narrow)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on X-Slice Vehicle 2.15 and click Edit. The Display Properties Dialog – Surface Coloring Tab opens.
Set the Legend range from -0.3 to 0.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Display value to 7.
Set the Contour Range from -0.3 to 0.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Rear | Wake view and capture an image.

Cv (time-averaged)

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on X-Slice Vehicle 2.15 and click Edit. The Display Properties Dialog – Surface Coloring Tab opens.
From the Display Properties Dialog – Surface Coloring Tab, set the Display value to time_avg_velocity_magnitude_coefficient, and the Legend range to 0 to 1.2.
From the Display Properties Micro-Dialog, switch to the Contour Line Display tab.
Set the Variable value to time_avg_velocity_magnitude_coefficient, and the Contour range to 0 to 1.2. 5. Select the Rear | Wake view and capture an image.

Cv (time-averaged) + Vectors

From the Post Browser, under Standard Output > Visualizations > Slice Planes, right click on X-Slice Vehicle 2.15 and click Edit. The Display Properties Dialog – Surface Coloring Tab opens.
Repeat Steps 2-7.
From the Slice Plane Guide Bar, click on the green check mark to accept.
Select the Rear | Wake view and capture an image.

Iso-Surfaces

CpT

From the Post Browser, under Standard Output > Visualizations > Iso-Surfaces, right click on CpT and click Edit.
The Iso-Surfaces Guide Bar and Display Properties Dialog – Surface Coloring Tab open.
From the Display Properties Dialog – Surface Coloring Tab, Set the Display color to RGB value 250, 70, 22.
From the Iso-Surfaces Guide Bar, click on the Iso-Function button. The Iso-Function Guide Panel opens.
Set the Iso Value to 0, then click the Calculate button.
From the Iso-Surfaces Guide Bar, click on the green check mark to accept.
Cycle through the Wake | Left, Wake | Front, Wake | Rear, Wake | Top, Wake | Bottom, Wake | Front-Bottom-Right, Wake | Front-Bottom-Left, Wake | Rear-Bottom-Right, Wake | Rear-Bottom-Left, Wake | Left | Rear, Wake | Top | Rear, and Wake | Bottom | Rear views and capture images for each.
From the Post Browser, under Standard Output > Visualizations > Iso-Surfaces, right click on CpT and click Hide.

X-Vorticity

From the Post ribbon, click on the Iso-Surfaces Tool.
The Iso-Surfaces Guide Bar and Iso-Function Guide Panel open.
From the Iso-Function Guide Panel, set the Iso Variable to x vorticity and the Iso Value to -100, then press the Calculate button.
As a result of the actions taken in Step 7, x vorticity represents time-averaged x-vorticity, not instantaneous x-vorticity.

The Display Properties Micro-Dialog opens in the Surface Coloring tab.
From the Display Properties Dialog – Surface Coloring Tab, set the Display to constant, and set the color to RGB value 0, 87, 111.
From the Post Browser, under Visualizations > Iso-Surfaces, right click on the newly created Iso-Surface, rename to X-Vorticity-.
From the Iso-Surfaces Guide Bar, click on the green check mark to accept.
From the Post ribbon, click on the Iso-Surfaces Tool. The Iso-Surfaces Guide Bar and Iso-Function Guide Panel open.
From the Iso-Function Guide Panel, set the Iso Variable to x vorticity and the Iso Value to 100, then press the Calculate button. The Display Properties Micro-Dialog opens in the Surface Coloring tab.
From the Display Properties Dialog – Surface Coloring Tab, Set the Display color to RGB value 250, 70, 22.
From the Post Browser, under Visualizations > Iso-Surfaces, right click on the newly created Iso-Surface, rename to X-Vorticity+.
From the Iso-Surfaces Guide Bar, click on the green check mark to accept.
From the Post ribbon, click on the Notes Tool. The Notes Guide Bar opens.

Figure 23.
Click on the top-left corner of the viewer to select where to display the note.

Figure 24.
From the Notes Micro-Dialog, clear the text field and enter “X-Vorticity = -100”, then set the font color to RGB value 0, 87, 111.
From the Notes Guide Bar, click on the green check mark to accept.
From the Post Browser, under Standard Output > Visualizations > Notes, right click on the newly created Note and rename to Top Note.
From the Post ribbon, click on the Notes Tool. The Notes Guide Bar opens.
Click on the viewer, just below Top Note to plane a new note here. The Notes Micro-Dialog opens. Note: If you are unsatisfied with the location of the note, you may move it by further clicking on the viewer.
From the , clear the text field and enter “X-Vorticity = +100”, then set the font color to RGB value 250, 70, 22.
From the Notes Guide Bar, click on the green check mark to accept.
From the Post Browser, under Standard Output > Visualizations > Notes, right click on the newly created Note and rename to Bottom Note.
Cycle through the Wake | Left, Wake | Front, Wake | Rear, Wake | Top, Wake | Bottom, Wake | Front-Bottom-Right, Wake | Front-Bottom-Left, Wake | Rear-Bottom-Right, Wake | Rear-Bottom-Left, Wake | Left | Rear, Wake | Top | Rear, and Wake | Bottom | Rear views and capture images for each.
From the Post Browser, under Standard Output > Visualizations > Iso-Surfaces, right click on X-Vorticity- and click Hide.
From the Post Browser, under Standard Output > Visualizations > Iso-Surfaces, right click on X-Vorticity+ and click Hide.

Y-Vorticity

Repeat Steps 1-10 for Y-Vorticity.
From the Post Browser, under Standard Output > Visualizations > Notes, right click on Top Note and click Edit. The Notes Micro-Dialog opens.
From the Notes Micro-Dialog, clear the text field and enter “Y-Vorticity = -100”.
From the Notes Guide Bar, click on the green check mark to accept.
Repeat Steps 2-4, using Bottom Note and setting the text to “Y-Vorticity = +100”.
Cycle through the Wake | Left, Wake | Front, Wake | Rear, Wake | Top, Wake | Bottom, Wake | Front-Bottom-Right, Wake | Front-Bottom-Left, Wake | Rear-Bottom-Right, Wake | Rear-Bottom-Left, Wake | Left | Rear, Wake | Top | Rear, and Wake | Bottom | Rear views and capture images for each.
From the Post Browser, under Standard Output > Visualizations > Iso-Surfaces, right click on Y-Vorticity- and click Hide.
From the Post Browser, under Standard Output > Visualizations > Iso-Surfaces, right click on Y-Vorticity+ and click Hide.

Z-Vorticity

Repeat Steps 1-10, and Steps 2-5 for Z-Vorticity.
Cycle through the Wake | Left, Wake | Front, Wake | Rear, Wake | Top, Wake | Bottom, Wake | Front-Bottom-Right, Wake | Front-Bottom-Left, Wake | Rear-Bottom-Right, Wake | Rear-Bottom-Left, Wake | Left | Rear, Wake | Top | Rear, and Wake | Bottom | Rear views and capture images for each.
From the Post Browser, under Standard Output > Visualizations > Iso-Surfaces, right click on Z-Vorticity- and click Hide.
From the Post Browser, under Standard Output > Visualizations > Iso-Surfaces, right click on Z-Vorticity+ and click Hide.

Cp

From the Post Browser, under Standard Output > Visualizations > Iso-Surfaces, right click on Cp+, click Show, then right-click on it again and click Edit. The Iso-Surfaces Guide Bar and Display Properties Dialog – Surface Coloring Tab open.
From the Display Properties Dialog – Surface Coloring Tab, Set the Display color to RGB value 250, 70, 22.
From the Post Browser, under Standard Output > Visualizations > Iso-Surfaces, right click on Cp-, click Show, then right-click on it again and click Edit. The Iso-Surfaces Guide Bar and Display Properties Dialog – Surface Coloring Tab open.
From the Display Properties Dialog – Surface Coloring Tab, set the Display to constant, and set the color to RGB value 0, 87, 111.
From the Post Browser, under Standard Output > Visualizations > Notes, right click on Top Note and click Edit. The Notes Micro-Dialog opens.
From the Notes Micro-Dialog, clear the text field and enter “Cp = -0.3”.
From the Notes Guide Bar, click on the green check mark to accept.
Repeat steps 623-625, using Bottom Note and setting the text to “Cp = +0.5”.
Cycle through the Wake | Left, Wake | Front, Wake | Rear, Wake | Top, Wake | Bottom, Wake | Front-Bottom-Right, Wake | Front-Bottom-Left, Wake | Rear-Bottom-Right, Wake | Rear-Bottom-Left, Wake | Left | Rear, Wake | Top | Rear, and Wake | Bottom | Rear views and capture images for each.
From the Post Browser, under Standard Output > Visualizations > Iso-Surfaces, right click on Cp- and click Hide.
From the Post Browser, under Standard Output > Visualizations > Iso-Surfaces, right click on Cp+ and click Hide.
From the Post Browser, under Standard Output > Visualizations > Notes, right click on Bottom Note and click Hide.

Q-Criterion

From the Post ribbon, click on the Iso-Surfaces Tool. The Iso-Surfaces Guide Bar and Iso-Function Guide Panel open.
From the Iso-Function Guide Panel, set the Iso Variable to q criterion and the Iso Value to 1,000, then press the Calculate button. The Display Properties Micro-Dialog opens in the Surface Coloring tab.
From the Display Properties Dialog – Surface Coloring Tab, Set the Display color to RGB value 250, 70, 22.
From the Post Browser, under Visualizations > Iso-Surfaces, right click on the newly created Iso-Surface, rename to Q-Criterion.
From the Post Browser, under Standard Output > Visualizations > Notes, right click on Top Note and click Edit. The Notes Micro-Dialog opens.
From the Notes Micro-Dialog, clear the text field and enter “Q-Criterion = 1,000”.
From the Notes Guide Bar, click on the green check mark to accept.
Cycle through the Wake | Left, Wake | Front, Wake | Rear, Wake | Top, Wake | Bottom, Wake | Front-Bottom-Right, Wake | Front-Bottom-Left, Wake | Rear-Bottom-Right, Wake | Rear-Bottom-Left, Wake | Left | Rear, Wake | Top | Rear, and Wake | Bottom | Rear views and capture images for each.
From the Post Browser, under Standard Output > Visualizations > Iso-Surfaces, right click on Q-Criterion and click Hide.

Lambda-2

From the Post ribbon, click on the Iso-Surfaces Tool. The Iso-Surfaces Guide Bar and Iso-Function Guide Panel open.
From the Iso-Function Guide Panel, set the Iso Variable to labmda2 and the Iso Value to 50,000, then press the Calculate button. The Display Properties Micro-Dialog opens in the Surface Coloring tab.
From the Display Properties Dialog – Surface Coloring Tab, Set the Display color to RGB value 250, 70, 22.
From the Post Browser, under Visualizations > Iso-Surfaces, right click on the newly created Iso-Surface, rename to Lambda-2.
From the Post Browser, under Standard Output > Visualizations > Notes, right click on Top Note and click Edit. The Notes Micro-Dialog opens.
From the Notes Micro-Dialog, clear the text field and enter “Lambda-2 = 50,000”.
From the Notes Guide Bar, click on the green check mark to accept.
Cycle through the Wake | Left, Wake | Front, Wake | Rear, Wake | Top, Wake | Bottom, Wake | Front-Bottom-Right, Wake | Front-Bottom-Left, Wake | Rear-Bottom-Right, Wake | Rear-Bottom-Left, Wake | Left | Rear, Wake | Top | Rear, and Wake | Bottom | Rear views and capture images for each.
From the Post Browser, under Standard Output > Visualizations > Iso-Surfaces, right click on Lambda-2 and click Hide.
From the Post Browser, under Standard Output > Visualizations > Notes, right click on Top Note and click Hide.

Engineering Quantities

Force

From the Post ribbon, click on the Engineering Quantities Tool. The Engineering Quantities Guide Bar opens.

Figure 25.
From the Engineering Quantities Guide Bar, select Force from the left-most button, then set the entity selector to Boundary Groups.
Select the Vehicle boundary group. The Force Guide Panel appears.

Figure 26.
From the Force Guide Panel, check the Normalize force and Sectional force checkboxes.
Set Freestream velocity, Freestream density, Area, and Sections to 30, 1.204, 2.291, and 100 respectively then press Calculate. The Force Quantity Dialog is shown.

Figure 27.
From the Post Browser, under Standard Output > Measures > Engineering Quantities, right click on the newly created Quantity, rename to Force.

Vortex Core

From the Post ribbon, click on the Vortex Core Tool. The Vortex Core Guide Bar opens.

Figure 28.
From the Vortex Core Guide bar, press the Vector Variable button. The Vector Variable Micro-Dialog opens.

Figure 29.
From the Vector Variable Micro-Dialog, set time avg velocity as the Vector Variable and click Calculate. Once the vector cores have been calculated, the Vortex Core Micro-Dialog opens.

Figure 30.
From the Vortex Core Micro-Dialog, set the Display value to constant and the color to RGB value 250, 70, 22.
Toggle the Threshold button and set the Threshold value to time avg vorticity magnitude, then move the slider to the middle.
From the Vortex Core Guide bar, click on the green check mark to accept.
From the Post Browser, under Standard Output > Visualizations > Vortex Core, right click on the newly created Vortex Core, and rename to Vortex Core.
Cycle through the Wake | Left, Wake | Front, Wake | Rear, Wake | Top, Wake | Bottom, Wake | Front-Bottom-Right, Wake | Front-Bottom-Left, Wake | Rear-Bottom-Right, Wake | Rear-Bottom-Left, Wake | Left | Rear, Wake | Top | Rear, and Wake | Bottom | Rear views and capture images for each.
From the Post Browser, under Standard Output > Visualizations > Vortex Core, right click on Vortex Core and click Hide.

Results Import

From the ribbon selection toolbar (horizontal toolbar), click Post.
From the horizontal toolbar, click File > Open > Results.
The File Browser opens.
From the File Browser, change the file type to ultraFluidX Results (.case, .sos, .h3d).
Navigate to your results directory. Open the uFX_fullData folder, select uFX_output.sos and click Open.
The Reader Options Dialog Box opens.

Figure 31.
From the Reader Options Dialog Box, select Default Step from the list on the left and set the Default Step to Last on the drop-down to the right. This instructs HyperMesh CFD (HMCFD) to load the results from the last timestep available on the results file to memory.
From the Reader Options Dialog, select Variables from the list on the left and enable the checkboxes for Compute Q-Criterion, Compute Lambda2, Compute Vorticity to the right and set the Gradient variable to time_avg_velocity. This instructs HMCFD to compute these field variables using the time-averaged velocity field variable when computing gradients.
From the Reader Options Dialog Box, select Default Display from the list on the left and make sure that Cache time-dependent data is unchecked.
From the Reader Options Dialog, press Import.
The model is imported into HyperMesh CFD.
The Post Browser should now contain a second-level folder under the name of uFX_output. Right-click on this folder and click rename. Rename the folder as Standard Output.
If you are unable to see the Post Browser, from the menu bar, click View, then check Post Browser.

Calculate Derived Data

From the Post ribbon, click on the Calculate Tool.

Figure 32.

The Derived Data Calculator opens.
From the Derived Data Calculator, click on the icon.
The default derived variable list is uploaded.
From the Derived Data Calculator, change the value of velocity_magnitude_inf to 30, that of density_inf to 1.2041, and that of molecular_viscosity to 1.8194e-05.
Press the save button and save the file as Aurora_Derived_Data_Calculator.csv.

Note: This step is not required for use of derived data. Here, the file is being saved for future use with other datasets.
Close the Derived Data Calculator.

Save Boundary Information

From the Post Browser, under Standard Output > Boundary Collections > Flow Boundaries, right click on Body_Exterior_Mirror_Left and click on Info.

Tip: Use the search tool in the Post Browser to quickly find the part.

Figure 33.

The Info micro-dialog opens.
Press the save button and save the file as Body_Exterior_Mirror_Left.csv.
Close the Info micro-dialog.
Repeat steps 1-3 for the following flow boundaries:
- Body_Exterior_Windshield_Front (Body_Exterior_Windshield_Front.csv)
- Wheel_Tire_Front_Left (Wheel_Tire_Front_Left.csv)

Time-Averaged monitoringSurfaces Results

Import the uFX_monitoringSurfaces Results

Note: Before working on a new set of results, it is best to hide (or delete – in the case where RAM resources are limited) all other results. Alternatively, you could simply close the current session and start a new one.

From the horizontal toolbar, click File > Import > Results. The File Browser opens.
From the File Browser, change the file type to ultraFluidX Results (*.case *.sos *h3d).
Navigate to your results directory. Open the uFX_monitoringSurfaces > uFX_monitoringSurface_Monitoring_Surface_Grille_Bars1 directory, select uFX_output.sos and click Open. The Reader Options dialog box opens.
From the Reader Options Dialog Box, select Variables from the list on the left and disable the checkboxes for Compute Q-Criterion, Compute Lambda2, Compute Vorticity to the right.
From the Reader Options Dialog Box, press Import. The model is imported into HyperMesh CFD.
The Post Browser should now contain a second-level folder under the name of uFX_output. Right-click on this folder and click Rename. Rename the folder to Grille Monitor Surface.
Repeat Steps 1-6 for the Condenser Outlet, Low Temperature Radiator Outlet, and Transmission Oil Cooler Outlet using the uFX_monitoringSurface_Condenser_Outlet_MonSurf1, uFX_monitoringSurface_LowTempRad_Outlet_MonSurf1, and uFX_monitoringSurface_TransOilCooler_Outlet_MonSurf1 folders respectively, renaming each as Condenser Monitor Surface, Low Temperature Radiator Monitor Surface, and Transmission Oil Cooler Monitor Surface respectively.