The problem to be considered is shown schematically in Figure 5-1; it is the external body
of a luxury sedan. You will generate a mesh on the outside of the car body; therefore, you
will create a brick around the sedan to represent the flow domain.
In this tutorial, you will create a fully unstructured tetrahedral mesh around a car-body
geometry imported as an IGES file. This tutorial illustrates the steps you would typically
follow to prepare an imported CAD geometry for meshing. The imported geometry is
“dirty”—that is, there are gaps between some of the surfaces that make it unsuitable for
creating a CFD mesh. After examining the raw imported geometry to identify its
problems, such as unconnected edges, you will clean up the geometry using the tools
available in GAMBIT.
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