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February 8, 2012, 05:59 |
very important question, please
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#1 |
Senior Member
hamid
Join Date: Nov 2010
Posts: 185
Rep Power: 15 |
Hi
how can we test and be sure mesh is correct in terms of skewness? i meshes my model and it has 75% of mesh between .9 and .95, how can i fix it? the mesh is tetrahedral and i can not make it finer.. |
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February 8, 2012, 07:13 |
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#2 |
Super Moderator
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41 |
in Fluent do a check mesh >> http://my.fit.edu/itresources/manual...ug/node827.htm
in Gambit you can examine your mesh with http://my.fit.edu/itresources/manual....htm#gc_exmesh In Gambit you can display all elements which skewness is between your 2 values, by entering values in "lower" and "upper" limits (range)
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In memory of my friend Hervé: CFD engineer & freerider |
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February 8, 2012, 07:26 |
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#3 |
Senior Member
hamid
Join Date: Nov 2010
Posts: 185
Rep Power: 15 |
thanks for reply,
i actually use icem, my question is the criteria, what is the criteria or role of thumb for that? if my skewness is less than .98 then is it acceptable?? for my model: 75% skewness .9 to .95 0.5% .95 to 1 when i fine the mesh the skewness become even worst, plz let me know.. |
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February 8, 2012, 07:31 |
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#4 |
Super Moderator
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41 |
ask icem people on http://www.cfd-online.com/Forums/ansys-meshing/
Personnaly I always try to get a mesh with max skewness <= 0.9 (tetra)
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In memory of my friend Hervé: CFD engineer & freerider |
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