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Z direction thickness control when using fluentMeshToFoam to extrude 2D mesh

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Old   January 31, 2009, 14:52
Default Hi, all I'm using the fluen
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wei wu
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Hi, all

I'm using the fluentMeshToFoam to extrude the 2D fluent mesh into 3D foam mesh. The aspect ratio is way too high for the boundary layer cells. I think the high aspect ratio comes from the Z dimension because when I check the 2D mesh in the gambit they are fine, but when I used the checkMesh after it's converted into 3D it reported the high ratio problem. I'm using 0.0001m for the thickness of first the boundary layer cell , but the thickness in the Z direction is 1.442m, which is automatically generated after fluentMeshToFoam. My question is how can I control the Z direction dimension when I'm converting the 2D mesh to a 3D?

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Old   February 1, 2009, 04:43
Default Hello, The quick alternative
Maruthamuthu Venkatraman
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The quick alternative can be you shall extrude the mesh in GAMBIT for a small z distance and export it to OPENFOAM. Since OpenFoam works with 3d geometry, may be the default size is set as some specific number.. If you have time for it you shall fix it...

may be it helps you...
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Old   February 1, 2009, 05:15
Default I think you could use transfor
Juho Peltola
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I think you could use transformPoints to change the Z-thickness after the extrusion. For example scale (1 1 0.1) would result in Z-thickness of 0.1442m on your mesh.
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