Use the Boundary Groups tool to create a group of surfaces and define display properties. These surface groups can
be utilized to group boundaries as required and define specific display properties.

Use the Slice Planes tool to create derived geometry by slicing solids on a plane and defining display properties.
The result of slicing is a 2D planar face.

Use the Iso-Surfaces tool to a create a derived geometry surface with a specific constant scalar value and define
display properties. The shape of the iso-surface is dependent on domains and flow field.

Use the Streamlines tools to create derived geometry streamlines which represent particle paths in a flow field. You
have to define participating solids, seed points, and vectors from which streamlines are computed as well as the integration
direction. There are various methods to generate seed points.

Use the Probe Points tool to define a point or set of points at specific co-ordinates and probe/query results. This
is useful for verifying experimental results with simulation result.

Use the Calculate tool to create new field quantities using a python expression. The new fields can be derived from
existing fields or be completely independent of other results in the dataset.

Process a surface output or point probe file created from data as a part of the General Signal Processing (GSP) workflow
that is utilized for Computational Aeroacoustics (CAA).

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.

Use the Engineering Quantities tool to simplify the calculation of values that are
commonly used during the post-processing of CFD results.

For example, the calculation of pressure drop between two surfaces in the model can
be computed by selecting Difference on the guide bar, then choosing the first collection of surfaces over
which to average the pressure, then selecting the second group of surfaces over
which to average the pressure. HyperMesh CFD Post automatically
computes the area weighted average of the selected variable (in this case pressure)
across all surfaces of each selection group, then computes the difference. The
difference is computed by subtracting the value of the second selection group from
the value of the first selection group. The resulting values are displayed in a
table that updates upon change of time step. If one of the selection groups is
derived geometry (such as a slice plane), the engineering quantity output is also
updated upon modification. The table that displays the engineering quantity output
can be displayed even while not in the Engineering Quantities tool. This is
controlled by toggling the visibility on and off in the browser.

From the Post ribbon, click the Engineering Quantities
tool.

Use the drop-down on the guide bar to select an
engineering quantity of interest.

The Engineering Quantities tool supports the following operations; Sum,
Difference, Area Average, Mass flow rate, and Uniformity Index.

Sum can be used to compute the area weighted sum of a variable on an
entity. For example, if the wall shear stress is an output field
from the solver, the sum over a surface will yield the viscous force
on that surface.

Difference can be used to compute the difference of a given variable
for two similar entities. For example, compute the pressure
difference of a slice plane upstream of an object from a slice plane
downstream of an object.

The area average option yields the area average of a variable over
an entity. The area average is weighted by the individual surface
elements that make of the entity, providing the area weighted
integral of that entity.

The mass flow rate option provides the ability to compute the mass
flow rate through a surface based on a velocity vector and a density
field (or constant value).

The uniformity index option computes the amount of local variation
from the area average value of the specified variable on an entity
normalized by the area averaged of that entity.

Select surfaces, boundary groups, or slice planes to consider and define the
variable/parameters in the microdialog to proceed.

Some engineering quantities require only a single selection group, such as
uniformity index, mass flow rate, sum, and average. Some quantities, such as
difference, require multiple inputs to calculate the resulting value.

For mass
flow rate, an input velocity vector is required, as well as the definition
of a density field. The density can be specified as a constant through the
microdialog or an existing scalar field can be
used to specify the density.

Click Calculate.

Optional: Click in the results dialog to save the values.