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-   -   ICEM 10.0.1 inverted elements (http://www.cfd-online.com/Forums/cfx/22735-icem-10-0-1-inverted-elements.html)

Fred June 19, 2006 13:50

ICEM 10.0.1 inverted elements
 
I've got a simple pipe geometry. Everytime I'm creating an ogrid i got negative volumes/elements on the inlet and outlet surfaces. the pre-mesh looks perfect but the pre-mesh quality check show me these elements, also i cant see them normally. What am I doing wrong. The geometry surface normals show all outside the domain. Please help me, its urgent.

Joe June 19, 2006 16:03

Re: ICEM 10.0.1 inverted elements
 
Run the mesh checker/fixer.

Fred June 20, 2006 02:33

Re: ICEM 10.0.1 inverted elements
 
I did. No change.

deLuther June 20, 2006 05:43

Re: ICEM 10.0.1 inverted elements
 
Post picture of your geometry/topology and resulted mesh

myron June 20, 2006 07:32

Re: ICEM 10.0.1 inverted elements
 
It almost sounds like you have pancaked blocks at the ends of the pipe. When you do the O-grid make sure you add the faces at the pipe ends so the O-grid passes through the ends.

If you turn on the Blocks make sure you don't have 0-thickness blocks at the ends of the pipe. If it turns out that you do - you can delete them.

Fred June 20, 2006 08:22

Re: ICEM 10.0.1 inverted elements
 
Thank you myron. I found those pancaked blocks. Now the mesh is as fine as it looks like.


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