CFD mesh
Altair EmployeeI have created a mesh by using CFD tetra mesh option in Hypermesh.I want the following quality index for the 3d mesh.
1.Aspect ratio <5
2.tetcollapse<1
3.skew<60
4.Max equi skewness <60
When I check Aspect ratio for 3d mesh, it shows the total boundary layer mesh as failed elements.What should I do to get rid of this problem?
If elements failed with given quality criteria, How can I repair those elements (CFD tetramesh).
Answers
-
If you are going to use AcuSolve, most of the cases do not need such a carefully generated meshes.
For Aspect ratios, you would have to generally change first BL height. Others are pretty much model dependent and difficult to say without looking at the model.
0 -
Altair Forum User said:
I have created a mesh by using CFD tetra mesh option in Hypermesh.I want the following quality index for the 3d mesh.
1.Aspect ratio <5
2.tetcollapse<1
3.skew<60
4.Max equi skewness <60
When I check Aspect ratio for 3d mesh, it shows the total boundary layer mesh as failed elements.What should I do to get rid of this problem?
If elements failed with given quality criteria, How can I repair those elements (CFD tetramesh).
For CFD Mesh, I don't think you need check 'aspect ratio' for boundary layer.
0 -
I created CFD tetra mesh with boundary layer mesh option.When I check the quality of tetra mesh, it shows total boundary layer mesh as a failed mesh.
If you don't mind could you tell, how can I create the volume mesh in Hypermesh for CFD problems?
0 -
Normally, boundary layer mesh is HEXA & PENTA elems, created from shell offset.
Within CFD profile, you have some tool to do that.
0