Maiki Vlahinos
Subscriber

Hi Mansoureh,

I quite randomly came across this post. Depending on the objective in Ansys, it's not a clear-cut answer. At the moment exporting an INP with the boundary conditions predefined in nTop is generally the best approach. Depending on the scenario you can also choose to export a surface mesh and use Ansys's Layer Tetrahedron Meshing Method. For going to Fluent, I generally recommended exporting a Surface MSH file with the boundary condition faces predefined in nTop as well.

I realize this is a very late reply but I hope it is helpful.

Thanks,
Maiki