[kg_059]

Hey everyone,

i am trying to mesh a wing. the trailing edge is coming out a bit fuzzy (picture 1). The wing is modeled as a fluid wall (see picture 2), so it should not be filled by a volume mesh. Thats why I do not really get why it is so fuzzy. I tried to use smaller and smaller elements but the "fuzziness" stays.

Does anyone have a tip how to fix this?

The geometry of the wing consist of two curves at the root and the tip each (upper and lower side of the airfoil), as well as the leading and the trailing edge. So the wing geometry consist of two surfaces in ice. The trailing edge also is just one curve, so perfectly sharp trailing edge is assumed. Maybe I need to "give" the trailing edge a defined thickness as it would be in real life?

Thanks in advance for your help

[siw]

Have you adequately defined connectivity of your curves using Build Topology? See this ICEM CFD video https://www.youtube.com/watch?v=bhE04cJ3X4o

Are you making the surface mesh via the volume Octree method first and then deleting the volume elements (then check and smooth the volume elements). Then recreate the volume with the Delaunay method (with TGlib, use AF), check and smooth. Then build the prisms. This is the best process for the tetra-prism and has been written here many times (but difficult to search for possibly).

[Gert-Jan]

You need to look fot "thin cuts".
Either in this forum or in the ICEM Help.

[IC_MAN]

In such a case, the thin cut is the best choice. Make sure that you difine minimum two different parts for the wing and put all curved and points in another part.

YOu find this option at Mesh > Volume Meshing Parameters : Define thin cuts


(see snapshot)


The edge criterion is a global parameter with an effect on the whole model hat canbe reduced from 0.2 to 0.05, if a specificpart cannot be defined.