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Old   August 18, 2003, 05:59
Default Non-Positive Volume
  #1
chetan
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I have generated a model in proe for a Shell & a tube attached at bottom of shell (Simple Geometry)

Exported as solid in STEP & imported in GAMBIT, applied Grid & Boundary Conditions & exported a mesh for fluent 5/6

While reading in Fluent 6.1 & checking that grid, getting message as "there are non-positive volumes" & checking fails, still I am going for analisys and getting error as diverged solution

I am not able to understand the error, please help me out.

Also how to give grid in shell thickness?? or just to provide a surface as shell thickness??
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Old   August 18, 2003, 17:07
Default Re: Non-Positive Volume
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emre
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Hi, When i see that error, i directly go back to Gambit and change the mesh, nothing to do in Fluent. regards emre
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Old   August 19, 2003, 07:00
Default Re: Non-Positive Volume
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ap
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Open the mesh in GAMBIT and check all volumes.

This will allow you to understand where the problem is.

GAMBIT will list all volumes which are not valid.

Hi

ap
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Old   August 19, 2003, 07:42
Default Re: Non-Positive Volume
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chetan
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How to check in Gambit for non valid volumes, can I create a volume for thickness for a tank model imported from PROE as STEP/SOLID?
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Old   August 19, 2003, 14:59
Default Re: Non-Positive Volume
  #5
ap
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To check volumes in GAMBIT you have to enter the section to create 3D geometries (click on the cube in the Geometry bar), then right-click on the i icon, and select the Check function (with the V-like symbol).

Click on that button, select all volumes you want to check and click on Apply.

GAMBIT will list all valid and not valid volumes.

Hi

ap
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Old   August 20, 2003, 12:01
Default Re: Non-Positive Volume
  #6
nikita
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the best solution for this..u do remeshing your drawing...there's some error on ur meshing never give up
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