FLUENT negative volume

eishinsnsayshin · March 26, 2012, 12:30

I have developed a fairly complex mesh in ANSA. When I do a mesh check in ANSA for negative volumes, it does not detect any. When I load the .msh file into fluent however, and do a mesh check there, it finds the minimum volume to be negative. Does anyone know if fluent can somehow display visually, or just spit out the xyz coordinates of where this negative volume is located so I can check it out in ANSA?

thanks

vangelis · March 27, 2012, 05:03

Hi there,

Have you checked the mesh quality in ANSA to see if there are any skewed elements?

Which ANSA version are you using?
Could it be that you have very small length scales and you need to run the double precision version of Fluent?

Best regards

Vangelis

March 26, 2012, 12:30	FLUENT negative volume	#1
eishinsnsayshin Member Join Date: Jun 2011 Posts: 48 Rep Power: 15	I have developed a fairly complex mesh in ANSA. When I do a mesh check in ANSA for negative volumes, it does not detect any. When I load the .msh file into fluent however, and do a mesh check there, it finds the minimum volume to be negative. Does anyone know if fluent can somehow display visually, or just spit out the xyz coordinates of where this negative volume is located so I can check it out in ANSA? thanks

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March 27, 2012, 05:03		#2
vangelis Senior Member Vangelis Skaperdas Join Date: Mar 2009 Location: Thessaloniki, Greece Posts: 287 Rep Power: 21	Hi there, Have you checked the mesh quality in ANSA to see if there are any skewed elements? Which ANSA version are you using? Could it be that you have very small length scales and you need to run the double precision version of Fluent? Best regards Vangelis