[dancfd]

Hello everyone,

I am new at snappyHexMesh, and I am trying to use the program to generate a 2-D mesh of an airfoil. I have been following the wingMotion series of tutorials, but the problem I run into is that I must avoid extruding a projection of the mesh as is done in wingMotion2D_simpleFoam. The reason is that I have modified the geometry (wing_5degrees.obj) file to include a second patch for a flap, which would be lost in the extrusion since autoPatch requires a geometrical feature to separate two patches - no such feature is present, I have merely set the trailing 20% of the airfoil as a flap.

When snappy is run, it generates a 3D mesh about 50 cells deep on the z-axis, for the wing (and flap) patch(es). Why does snappy choose this number, and how can it be reduced? I tried making the geometry thinner, but that did not make a difference. Is is possible to extrude while maintaining the patches in the axis along which the extrusion is taking place?

Thanks in advance,

Dan