# Mesh elements shape on faces

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August 16, 2011, 10:48
Mesh elements shape on faces
#1
Senior Member

Mohsin Mukhtar
Join Date: Mar 2010
Location: South Korea
Posts: 249
Rep Power: 8
Hello

I meshed a face of a cylinder with a pave scheme and an interval count on that face=50 (figure. 1)
Then, I meshed the second face with a pave and with an interval count on that face also=50 (Figure. 2)

I figured that the shape of the mesh elements are not the same on these faces. even though both are faces of a, uniform radius, cylinder; with the same mesh interval count and the same face vertex position. The top view is shown in figure. 3 which shows that mesh shape is different on both faces.

Could anyone tell me why the mesh elements' orientation is different for each of face? It fails the cooper scheme (Volume mesh) coz the mesh source faces are not similar for sweep. What might be the reason of mesh different shape and what is the remedy?

Note:
1. I tried meshing edges first, but similar problem.
2. The cylinder on both ends are also connected with other cylinders (sharing a split face).
3. Automatic cooper scheme is a remedy for this problem (as shown in figure 4, which is the top view of the cylinder giving same orientation/shape) but how does Automatic cooper scheme did it without shape change?

Thank you
Attached Images
 1.jpg (50.6 KB, 7 views) 2.jpg (83.7 KB, 6 views) 3.jpg (61.6 KB, 4 views) 4.jpg (54.4 KB, 5 views)

 August 16, 2011, 12:11 #2 Member   Join Date: Mar 2009 Posts: 85 Rep Power: 8 Hi, You can try to create the cylinder by extruding one (circle) side of it. Hope this helps.

 August 17, 2011, 00:40 #3 Super Moderator     Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 2,973 Rep Power: 30 if you want exactly the same face mesh you need to link the 2 faces (face/link) But if you only mesh one surface, then select volume mesh, gambit should mesh the volume automatically and therefore you get 2 identical surface meshes because of cooper. Note that for cooper mesh, you only need one source face which is meshed (and not 2) __________________ In memory of my friend Hervé: CFD engineer & freerider

 August 17, 2011, 02:37 #4 Senior Member   Mohsin Mukhtar Join Date: Mar 2010 Location: South Korea Posts: 249 Rep Power: 8 Thank you very much Max, Now it's clear. Husker, thank you too.

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