Negative volume in internal combustion engine analysis

a_cucen · August 16, 2012, 16:40

Hi,

I m trying to make an internal combustion engine analysis in fluent. I have set dynamic mesh zones.when displaying zone motion, it looks like ok. But when I Preview mesh motion, It gives this error and makes negative volume. What can I do to fix this problem? I realized that it is about cylinder motion. But I could not find the solution.

"Warning: Mesh projection of deforming dynamic zones exceeds reasonable limits.
Please verify that the correct geometry definitions have been specified. "

a_cucen · August 18, 2012, 08:38

I have found that my deforming and stationary surfaces are not matching. Can I measure an edge lenght or diameter in fluent?

shadiparsa · April 12, 2015, 15:40

hello!
I am having the same problem right now also!
did u find any solution for that?

August 16, 2012, 16:40	Negative volume in internal combustion engine analysis	#1
a_cucen Member Ahmet Join Date: Mar 2011 Location: Ankara/ Turkey Posts: 37 Rep Power: 14	Hi, I m trying to make an internal combustion engine analysis in fluent. I have set dynamic mesh zones.when displaying zone motion, it looks like ok. But when I Preview mesh motion, It gives this error and makes negative volume. What can I do to fix this problem? I realized that it is about cylinder motion. But I could not find the solution. "Warning: Mesh projection of deforming dynamic zones exceeds reasonable limits. Please verify that the correct geometry definitions have been specified. "

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August 18, 2012, 08:38		#2
a_cucen Member Ahmet Join Date: Mar 2011 Location: Ankara/ Turkey Posts: 37 Rep Power: 14	I have found that my deforming and stationary surfaces are not matching. Can I measure an edge lenght or diameter in fluent?

April 12, 2015, 15:40		#3
shadiparsa New Member Join Date: Sep 2014 Posts: 6 Rep Power: 11	hello! I am having the same problem right now also! did u find any solution for that?