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-   -   Volume negative (https://www.cfd-online.com/Forums/cfx/23896-volume-negative.html)

Diego Augusto April 23, 2007 09:05

Volume negative
 
I am having problems with elements negative volumes in the simulation of chamber of combustion of an engine diesel, what I must make?

Glenn Horrocks April 23, 2007 18:13

Re: Volume negative
 
Hi,

I have already discussed this issue in several posts. Do a search on the forum.

Glenn Horrocks

Gert-Jan April 25, 2007 14:12

Re: Volume negative
 
Try to make a mesh without negative elements. What do you use? I suspect ICEM CFD....

Gert-Jan

Diego Augusto April 26, 2007 08:21

Re: Volume negative
 
How I can make a mesh without negative elements? Yes I use ICEM CFD... Thanks a lot

Gert-Jan April 26, 2007 15:58

Re: Volume negative
 
Well, that is just a matter of experience. Do you make a hex mesh or a mix of tets-prisms? You should check the quality of your mesh before you export it to ansys format. Look for the icon with the large Q.

Good luck, Gert-Jan

www.bunova.nl

Diego Augusto April 27, 2007 09:34

Re: Volume negative
 
I always look for to make this, and the quality in the majority of the cases is very good. The mesh that I make is all in the format tetra, will be that I must make in the format tetra-prism? Thanks a lot!


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