[ANSYS Meshing] Quality of the mesh in sharp regions

Daniel101198 · April 26, 2018, 12:37

Hello everyone, I have a problem with the quality of the mesh.
I am studying a helical pipe inside a vessel with liquid and air.
At the interface between the liquid and the air in the area near the pipe I have an area that despite all the efforts made, the quality of the mesh is terrible.
In the images you can what I mean.
I have tried to exaggerately decrease the size of the element or work with sphere of influence in that small region, but it has not worked.
Has someone faced a similar problem or has any idea how to resolve this issue?
Thanks

Gert-Jan · April 26, 2018, 17:54

There is no way you can get a nice mesh in such a region. As long as there is a sharp angle, the mesh will be horrible.
You have to change the geometry. It is best to place a large fillet or similar where the faces make a small angle. Such that you get rid of the small angle.

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April 26, 2018, 17:54		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,995 Rep Power: 29	There is no way you can get a nice mesh in such a region. As long as there is a sharp angle, the mesh will be horrible. You have to change the geometry. It is best to place a large fillet or similar where the faces make a small angle. Such that you get rid of the small angle.