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Onboarding Resources
Discover HyperMesh CFD functionality with interactive tutorials and community resources.
Step-By-Step Tutorials
Post-Processing Tutorials
Automotive External Aerodynamics Post-Processing Tutorial
Use HyperMesh CFD Post-Processing to perform an external aerodynamic analysis of a vehicle.
Time-Averaged fullData Results
Surface Streamlines

Welcome
What's New
View new features for HyperMesh CFD 2025.
Get Started
Learn the basics and discover the workspace.
Onboarding Resources
Discover HyperMesh CFD functionality with interactive tutorials and community resources.
- Step-By-Step Tutorials
  - User Interface Introduction
  - Geometry Modeling Tutorials
  - Meshing Tutorials
  - Setup Tutorials
  - Post-Processing Tutorials
    - HMCFD-T: 3000 Post-Processing
    - Automotive External Aerodynamics Post-Processing Tutorial
      Use HyperMesh CFD Post-Processing to perform an external aerodynamic analysis of a vehicle.
      - Solution and Environment Selection
      - Time-Averaged fullData Results
        Results Import
        Calculate Derived Data
        Save Boundary Information
        Create Boundary Groups
        View Setup
        Image and Video Capture
        Surface Results
        Surface Streamlines
        Slice Planes
  - Automation Tutorials
- How To Videos
- Industrial Applications
  Access industrial application workflows through the Altair community.
- Online Training Material
  Click here to access online training material.
Solution Layers
Solution-centric workflows allow you to traverse through modeling environments using a dedicated UI layer.
Manage Files and Data
Create, open, import, and save models.
Convert
Use the Convert tool to convert entire models between data types.
Geometry Modeling
Manage CAD, FE, and 2D parametric sketch geometry.
Meshing
Generate surface/volume mesh by defining mesh controls, or interactively create and edit 2D surface mesh.
Setup
Prepare your model and run the simulation.
Post-Processing
Post-process the simulation results by creating visualizations and measurements.
Automation
Automate simulation processes with templates and utility scripts.
Design Exploration
Once the baseline model is prepared, you can define morph volumes, morph geometry, create design shapes and run DOE studies. These tool work for both AcuSolve and ultraFluidX-based workflows.
Solver Help
More resources for AcuSolve and ultraFluidX solvers.

View All Altair HyperWorks Help

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.