Mesh Refinement Problem
 

Hello all,

Im an undergraduate student doing some studies for my FSAE team, and I have been getting problems with fixing a mesh I am currently working on. I cannot get my skewness angle to drop below my maximum desired number, my best mesh is at ~85.56 degrees. The picture shows the current problem (most recent fix attempt).

-when I decrease the minimum surface size on my surface custom control, it creates the problem which I have on the picture. The skewed cells just move further into the surface.
-I have tried decreasing the surface growth rate to 1.01, and it doesn't make a noticeable difference from the initial 1.15 growth rate.
-I have a volume control encasing my geometry of interest that is keeping the cell size at 10 mm, which is what the surface target size is at.
-Running the simulation give me residuals between 1e-3 and 1e-4, but I am planning on using the mesh settings I find here to iterate on the design of the geometry in question, so a robust mesh is of importance (from what I know, there is still a lot I need to learn.)

If anyone can point me in the right direction to resolving this issue that would be deeply appreciated.

Thanks.

It’s difficult for me to tell what’s going on there without seeing the input surface to the volume mesh. Can you post a picture of that?

Also, are your high residuals in this area?

Thanks for responding! I was actually able to fix the issue recently, it had to do with my volumetric controls surrounding the surface, I had to locally reduce the target volumetric size until the cell growth stopped forcing the above problem.

And if high residuals is around 2e-3, then that was where most of my momentum residuals were around.