Boundary Layer continuity problem

AndreaMichelotti · March 2, 2021, 07:34

Hello to everyone,
this is my first post here.
I am meshing a UAV with STAR CCM+.
I imported a solid model, with Fuselage, Wing and Tail all separated and assembled in CATIA V5.
It works fine but the boundary layer isn't so good.
It varies in thickness when there are intersections between the different bodies, in particular Fuselage and Wing.
It is continuos but inconsistent.
Have someone any suggestion to kindly give me?
Thanks in advance

MaySea · March 8, 2021, 09:53

Hi Andrea,

Did you solve this?
I have very similar problems with the OpenFoam's mesher, snappyHexMesh. The layers are broken especially where my .stl has sharp angles.

Jan

AndreaMichelotti · March 10, 2021, 09:02

Hi!
Sadly, I didn't already solve it. If I will, I am going to tell you.

Aeronautics El. K. · June 16, 2021, 08:09

Quote:

Originally Posted by AndreaMichelotti

Hi!
Sadly, I didn't already solve it. If I will, I am going to tell you.

That's because it marks the common edge as a feature edge and it refines it quite a lot.
I guess if you don't refine the feature edge (unmark the feature edge) you'll solve the problem.

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March 8, 2021, 09:53		#2
MaySea Member Join Date: Nov 2018 Posts: 39 Rep Power: 7	Hi Andrea, Did you solve this? I have very similar problems with the OpenFoam's mesher, snappyHexMesh. The layers are broken especially where my .stl has sharp angles. Jan

March 10, 2021, 09:02		#3
AndreaMichelotti New Member Andrea Michelotti Join Date: Mar 2021 Posts: 12 Rep Power: 5	Hi! Sadly, I didn't already solve it. If I will, I am going to tell you.