Thin solid body in a flow field causing Fluent mesh generation problem
I am currently working on the simulation of flow in and around an open building and the roof has a thin section with a thickness of 0.03 meters. I use SpaceClaim to generate the geometry, and Fluent to generate the mesh. I follow the Watertight Geometry workflow and the ANSYS version is 2020 R2.
There are 2 scenarios:
- When I want to mesh the solid region, it takes more than an hour to finish generating around 12 million cells. This is strange because this computer has meshed some other geometries much faster.
- When I suppress the solid at SpaceClaim step and try to mesh only the fluid domain, I see a CAD import error. And the cells in and around the thin section are highlighted.
Could this all be because of the thin section? And according to SpaceClaim and Fluent Meshing, How thin is "thin"? I am not sure whether I know a way to do a tolerance-like control.