I am attempting to complete an incompressible CFD simulation over a NASCAR model. The model is a .stl file and I am getting an error that says the following: This geometry contains faults and cannot be used for simulation. Trying to sew and solidify sheet bodies (surface data) in the model. Some sheet bodies left.
I was curious if I could use SimScale itself or another free program for educational purposes to sew and solidify the sheet bodies to fix my geometry or use another method to resolve this issue.
Here is the link to my project: https://www.simscale.com/workbench/?pid=6153082340942396313&mi=geometry%3A2&mt=GEOMETRY
Hi @ptolley,
Fixing STLs may be quite tricky. Generally speaking, the best software to fix a geometry tends to be the same one that was used to build it (and preferably by the same person who created it).
Here are some options which you can test: MeshLab, MeshMixer, Blender. All of these have stl cleaning routines and could help you to make the geometry watertight. Fair warning: it’s not very easy and there is no guarantee that it will actually work with every stl model. These software are more focused on 3D printing and not on CFD.
In case you are interested in just a generic race car model, I’d encourage browsing through the public projects section, where you will certainly find watertight models. Filtering the search by CAD format helps a lot (choosing parasolid, step, etc.).
Good luck!