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Old   January 3, 2003, 12:41
Default Meshing !
  #1
Bharath
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helloo

I got an Error saying "Non positive Volumes Exist, Grid Check Failed " while doing a grid Check in Fluent. why is this happening ?? and wht should i do to get the error out ?

Thanks

Bharath
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Old   January 4, 2003, 01:55
Default Re: Meshing !
  #2
zhhuang
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you can mesh the model using Gambit!
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Old   January 5, 2003, 07:13
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???
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Yes, but I have had non-positive volume problems when using GAMBIT, so I don't understand your point...
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Old   January 5, 2003, 20:19
Default Re: Meshing !
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Alamgir
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What type of geometry u built up? If the blocks overlapped on each other this could be happen.

1. Try to rebuild and take care when combind or split. 2. Check from gambit how many volumes r there? Is there any unnecessary volumes (double volume) which might be created by copying? If so, remove this. 3. Best way to start from scrach.

Alamgir
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Old   January 6, 2003, 00:02
Default Re: Meshing !
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candy
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i met this problem before, that is to say , your grid is not good enough to caculate. you have to remeshi your grids
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Old   January 16, 2003, 05:36
Default Re: Meshing !
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Chris
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Hi Bharath,

I seem to have ran into the same problem! I spent ages building my model from Gambit, and it was successfully exported, Yet, when I did a grid check in Fluent, there was the negative volume problem!

I have tried re-starting, re-meshing a few times, but not every time was successful.

Thanks for everyone's posting on this thread. I will go back and (1) check for redundant volumes (2) overlapping volumes during meshing and (3) reducing the size of the mesh.

I will ask for more help from you guys if it doesnt work.

Gracias!
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