{"id":308082,"date":"2023-09-22T12:15:30","date_gmt":"2023-09-22T12:15:30","guid":{"rendered":"\/forum\/forums\/topic\/stichting-boundary-layers-together\/"},"modified":"2023-09-22T12:15:30","modified_gmt":"2023-09-22T12:15:30","slug":"stichting-boundary-layers-together","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/stichting-boundary-layers-together\/","title":{"rendered":"Stichting boundary layers together"},"content":{"rendered":"

I am trying to simulate a pair of corotating screws, but I am experiencing some issues with the meshing. Because I am using the sliding mesh approach, I have defined 3 cell zones:<\/p>\n

-2 cylinders from which the screws have been subtracted and which will be rotating (red and purlple-ish)<\/p>\n

-1 static zone, which is the container of the screws (light-blue)<\/p>\n

I have defined boundary layers along the walls of the screws and the walls of the container. On top of that, I have defined a boundary layer on the sliding mesh interface. When I generate the poly-hexcore mesh, the boundary layer on the sliding mesh is weirdly stitched together with the boundary layer on the wall of the container (see picture below). Is there a way to enforce a better alignment of the 2 boundary layers? The most obvious solution, in my opinion, would be to not create any polyhedrals, but have prisms throughout this region. Is there a way to tell the mesher to do so? Thank you in advance for your reply!<\/p>\n

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