Learning Forum

[calvinmooney13]

Hi, I have drawn up a NACA0012 airfoil in desingmodeler, and also tried it in spaceclaim, using a boolean operation to remove the airfoil section from the fluid domain before i import the mesh into ansys fluent. However, as can be seen in the provided images, I am having issues with the trailing and leading edges. The elemtns seem to protruding beyond the wall of the airfoil, creating a bad mesh quality and teh LE and TE. I have been trying to fix this by chnaging element sizes, using bias types, and changing various setting but none of it seems to be workign for me. Is anyone able to give me any advice on what to do in this situation? Thanks. 

 

[peteroznewman]

One way to clean up the LE and TE is to split the fluid domain at the LE andTE.  That way, you can have an upper fluid domain and a lower fluid domain. Use shared topology so that the mesh is congruent between the two domains.  By doing this, you can have the boundary layers continue behind the TE and this will help to clean up the TE.

Use curvature-based mesh refinement on the LE so that smaller elements are used where there is high curvature, and the element size can be larger where the curvature is fairly flat.