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-   -   Negative volume in ICEM CFD (http://www.cfd-online.com/Forums/cfx/22783-negative-volume-icem-cfd.html)

hagupta June 29, 2006 05:41

Negative volume in ICEM CFD
 
Hi all,

I am trying to hex-mesh my geometry in ICEM-CFD. I am getting some negative volume elements as can be seen in the link. The elements shown in the link are the only negative volume elements. http://ez-files.net/download2.php?a=...9bb952c19dfa0f

The geometry consists of a cylinder having three baloon shaped surfaces on the curved surface of the cylinder as seen. The screenshot in the link shows the region of the cylinder where the ballon shaped surfaces lie.

The negative volumes come up the moment I collapse certain blocks to get the blocks as seen.

What could be the cause of the same?

Any help or queries are appreciated.

Joe June 29, 2006 05:52

Re: Negative volume in ICEM CFD
 
Your link is buggered usw www.imageshack.us

hagupta June 29, 2006 06:05

Re: Negative volume in ICEM CFD
 
This link should work http://img48.imageshack.us/img48/9466/screenshot4fn.png

Thanks Joe

myron June 29, 2006 08:38

Re: Negative volume in ICEM CFD
 
Go to Blocking > Check/Fix Blocks. Run 'Fix Inverted Blocks' then run 'Check/Fix'. See if that helps.

hagupta June 30, 2006 06:20

Re: Negative volume in ICEM CFD
 
Thanks, it removed the negative elements.


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