I am using Hex-Dominant Automatic (CFD Only) meshing and the result is an external mesh rather than internal. I have using this for several weeks and it always created an internal mesh. Starting yesterday, it is now creating an external mesh which is clearly not correct. I don’t believe I am doing anything different this time.
Here is the project.
Unfortunately, I have now used up a lot of core hours trying to figure out what has gone wrong.
Update - If I choose parametric CFD, I notice that the default material point is outside of the geometry. I think the issue with the Automatic is that the default material point is not inside the object which it always should be for that type of mesh.