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-   -   My patch causes a discontinuity in the mesh (http://www.cfd-online.com/Forums/cd-adapco/53875-my-patch-causes-discontinuity-mesh.html)

Aline July 6, 2004 10:11

My patch causes a discontinuity in the mesh
 
I have a 3D model done with a patch (shells) that I extruded in cylindrical coordinate. I ran the analysis, but I saw in the results that there is a discontinuity in the flow where the patch is, as if the patch was a wall. In the cells list, I have fluid cell except for the patch. What can I do to remove this discontinuity?

Thanks.

Brian July 6, 2004 11:44

Re: My patch causes a discontinuity in the mesh
 
Sounds like you extruded to both sides of the patch? (If not, your patch (shells) are against a wall, and there should be a boundary layer)

So after extrusion, did you do a VMERG to link the two meshes together?

Aline July 6, 2004 11:56

Re: My patch causes a discontinuity in the mesh
 
Thank you! It was that! I did not do the VMERG.

Thanks a lot.

Aline July 6, 2004 12:00

Re: My patch causes a discontinuity in the mesh
 
But now I have collapsed faces, what can I do?

Thomas July 7, 2004 07:41

Re: My patch causes a discontinuity in the mesh
 
sounds like you have now some prisms in the center of your duct (due to extrusion and vmerg) put these cells into cset and: cflip cset,,,prism this should work


Aline July 7, 2004 07:45

Re: My patch causes a discontinuity in the mesh
 
Yes it works. Thanks!


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