[ICEM] mesh quality

Cecco · June 6, 2012, 03:23

How can I judge if my mesh is good? I got:

**********************
* ELEMENTS * QUALITY *
**********************
* 1 * 0.27 *
* 5 * 0.31 *
* 26 * 0.36 *
* 252 * 0.45 *
* others * more than 0.5
**********************

HEXA: 20.000 elements

p.galimutti · June 6, 2012, 10:02

you need to see icemhelp manual for quality. there are about 45 parameters for judging mesh quality.

your mesh 'Quality' values given by ICEM depends from element to element. As I see it's a mixture of tetra/prism/hexa elements, you need to check other parameters as well.

Again it depends on Solver too.

Personally, I'd like to check aspect ratio, orthogonal quality, skewness, mesh expansion factor etc.

BrolY · June 6, 2012, 11:13

It depends on your solver and the type of elements.

For example, determinant is very important for hexa elements, but not very relevant for tetra elements.

You should have a look to the user manual of your solver for more informations.

dizzy · June 6, 2012, 11:36

It hardly depends on the problem. In some areas good mesh quality isn't very important, but you need to make refinements in areas of interest.

June 6, 2012, 03:23	mesh quality	#1
Cecco Member Francesco Join Date: Jan 2012 Posts: 31 Rep Power: 14	How can I judge if my mesh is good? I got: ********************** * ELEMENTS * QUALITY * ********************** * 1 * 0.27 * * 5 * 0.31 * * 26 * 0.36 * * 252 * 0.45 * * others * more than 0.5 ********************** HEXA: 20.000 elements

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June 6, 2012, 10:02		#2
p.galimutti Member Peter Galimutti Join Date: May 2012 Posts: 37 Rep Power: 13	you need to see icemhelp manual for quality. there are about 45 parameters for judging mesh quality. your mesh 'Quality' values given by ICEM depends from element to element. As I see it's a mixture of tetra/prism/hexa elements, you need to check other parameters as well. Again it depends on Solver too. Personally, I'd like to check aspect ratio, orthogonal quality, skewness, mesh expansion factor etc.

June 6, 2012, 11:13		#3
BrolY Senior Member AB Join Date: Sep 2009 Location: France Posts: 323 Rep Power: 21	It depends on your solver and the type of elements. For example, determinant is very important for hexa elements, but not very relevant for tetra elements. You should have a look to the user manual of your solver for more informations.

June 6, 2012, 11:36		#4
dizzy New Member Join Date: Jun 2011 Posts: 10 Rep Power: 14	It hardly depends on the problem. In some areas good mesh quality isn't very important, but you need to make refinements in areas of interest.