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When post processing a simulation in CFD-VIEW, you
will often be working with multiple types of objects.
Volumes and Surfaces are two types objects that you
will most definitely have whether the model is 2D or
3D. Other types of objects that CFD-VIEW interprets
as unique types are Cuts (X,Y,Z), Planes (I,J,K),
Annotations, and various other types. You can use the
"Display Item Masks" to filter which objects are
visible/selectable in the graphics window. The
"Display Item Masks" tab is shown in Figure 1.
Figure 1. Display Item Masks in the Attributes
Panel
For illustration purposes, a model that consists of
flow over a series of heated cylinders will be used,
as shown in Figure 2.
Figure 2. Example case
As shown in Figure 1, this model consists of Inlets,
Outlets, Walls, Interfaces, Symmetries, and Volumes.
In the case of surfaces, CFD-VIEW allows you to
also filter by surface type (for 3D cases). So, if you
are only interested in viewing the Walls in a model,
you can uncheck all other surface types. The most
common surface type that might need to be filtered is Interface, since in most cases they are simply
artifacts of the grid generation process, i.e. they
serve no physical purpose with respect to the model.
For 3D models with many Interfaces, filtering these
can greatly improve model visualization.
Figure 3. Symmetry and Interface surface types
filtered
As mentioned, cuts, planes, annotations, etc. can
also be masked. When a new type of object is created,
an option for filtering this type of object is added
to the "Display Item Masks" panel. For example, an
Iso-Surface, Cut, Plane, Stream Trace, Point Probe,
and an Annotation were created for this model. As
shown in Figure 4, each of these objects types show
up in the "Display Item Masks" panel. We can now
filter these objects as needed.
Figure 4. Various object types that can be filtered
Next time you use CFD-VIEW, try using the
"Display Item Masks" filtering to see if it helps you
with your post-processing.
If you have any questions about this tip or would
like us to discuss other topics in the future,
please let us know.
Regards,
ESI CFD Support Team
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