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-   -   Negative volume (http://www.cfd-online.com/Forums/cd-adapco/53481-negative-volume.html)

Mahbub September 15, 2003 14:07

Negative volume
 
Hi, How can I get rid of the Error message # 70, " Cells found with negative volume or volume less than specified value"? Thanks a lot. Mahbub alo_90@yahoo.com

allan September 15, 2003 18:48

Re: Negative volume
 
this error message means the cell has too small a volume. Are you using proam?

allan

Mahbub September 15, 2003 19:09

Re: Negative volume
 
Thanks. No, I'm using Prostar. How can I fix that? Mahbub

carno September 16, 2003 01:07

Re: Negative volume
 
Go to check tool and check the cells for 'left handed cells' criteria. Then click on the 'fix left handed cells' tab. and again check for -ve volume. It will definately solve the problem.

Thanks

Mahbub September 16, 2003 01:22

Re: Negative volume
 
Yes, the problem is solved. Thank you so much carno. mahbub

cfdweirdo September 16, 2003 12:21

Re: Negative volume
 
Be careful!!!

There are left-handed cells which are simply defined incorrectly.

There are also truely negative volume cells which are a cell quality issue.

Best thing to do is inspect the cells. Don't push buttons blindly.

Good luck.

abstrused00388 April 28, 2011 02:39

Quote:

Originally Posted by carno
;165312
Go to check tool and check the cells for 'left handed cells' criteria. Then click on the 'fix left handed cells' tab. and again check for -ve volume. It will definately solve the problem.

Thanks

Fix left handed cells ?? i dont find a tab like that .. ! sorry for being lame ..but please excuse me and let me know !

RobertB April 28, 2011 09:04

The command is CFLIP, but it does depend on the cause. If they are extruded left handed, for example, this will work, If they are distorted then it ultimately will not.


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