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Using the wing mesher

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Old   November 16, 2015, 12:56
Default Using the wing mesher
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Gavin Brown
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I attempting to produce a C-grid mesh around an airfoil. The requirements for the wing mesher as stated on the Star-CCM+ Help module are as follows:

•The wing surface and bounding box (if included) should be of a reasonable quality triangulation.
•One or more unique boundaries can be used for each wing.
•If a bounding box is used, then the wing and box must form a single, closed and manifold surface. The bounding box upper, lower, front, and rear surfaces should also be approximately no more than one chord length away from the wing. Each box side should also be represented using a single unique boundary.
•The wing ends must be open in all instances.
•Each wing must have a blunt trailing edge.
•The wing should be aligned to the laboratory cartesian system as best as possible.

I have attempted to do this by creating a foil and bounding box part, surface wrapping the foil, subtracting the surface wrapper from the bounding box and then using a tetrahedral automated mesh. The result looks extremely similar to file:///opt/star/STAR-CCM+10.04.011-R8/doc/en/online/STARCCMP/images/GUID-E56EA762-AD4E-4C2A-942B-9E0E21AF4C9A=en=Low.gif (taken from Star-CCM+ help guide)

However, I assume I am barking up the wrong tree as it returns a warning when I attempt to run the wing mesher: "Cannot execute without a surface representation"

Can anybody help me out? I've got a feeling it may be something very simple I've overlooked (I am very new to CFD).

Thanks a lot.
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Old   November 20, 2015, 01:14
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The 'wing mesher' is a really old piece of code and not designed to work with parts-based meshing. You need to use region based meshing for it. Why did you bother building a tet mesh?

STAR-CCM+ is not really good at making these kinds of structured grids honestly. I would just go unstructured.
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