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[Commercial meshers] negative volume in gambit |
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May 23, 2011, 09:29 |
negative volume in gambit
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#1 |
Member
sofia
Join Date: Apr 2010
Location: world
Posts: 31
Rep Power: 16 |
Hello every body;
I am trying to mesh a wavy wall cylindrical geometry with gambit for exporting it to fluent,but i encounter a problem in meshing edge and volume i d'nt anderstand what is the mean of mesh of volume contains skewed elements(equisize skew>0.97) volume contains 3458inverted elements (negative volume), with this message i can't checking this mesh in fluent ,how can i correct this error? |
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May 25, 2011, 02:05 |
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#2 |
Super Moderator
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41 |
go back to gambit, and use the examine mesh tool to localize where are the skewed cells
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In memory of my friend Hervé: CFD engineer & freerider |
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May 25, 2011, 15:56 |
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#3 |
Member
sofia
Join Date: Apr 2010
Location: world
Posts: 31
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thanks, but i don't know how to use this function
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January 17, 2012, 10:16 |
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#4 |
New Member
Join Date: Apr 2011
Posts: 29
Rep Power: 15 |
Is it necessary to repair it?
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January 17, 2012, 10:24 |
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#5 |
Super Moderator
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41 |
try to run your model with this mesh... and you will have your answer
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In memory of my friend Hervé: CFD engineer & freerider |
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January 17, 2012, 21:08 |
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#6 |
New Member
Join Date: Apr 2011
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How much probability is that I have "Divergence detected in AMG Solver: pressure correction" error in Fluent by negative (inverted) volumes? I have boundary conditions for pressure inlet and outlet. Any models (k-eps, laminar etc.) and changing other parameters don't change the situation.
How to remove negative (inverted) volumes in Gambit? I have 0,00536% of inverted volumes for mesh of spiral of axial compressor. |
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January 18, 2012, 03:34 |
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#7 |
Super Moderator
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41 |
WIth negative volumes, the solver shouldn't start.
Try to know, what generates those negative volumes. In gambit go to examine mesh, select volume, and set the upper limit to 0. It will display all the negative cells.
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In memory of my friend Hervé: CFD engineer & freerider |
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