[amrit]

while iterating a case of dynamic meshing, using FLUENT 6.2.16, i got a "negative volume error"... can ne1 plz tell me the various possibilities for the above mentioned error..plzz help..... thank you!!!

[-mAx-]

Investigate the reason for negative volume.
Typically it is a MDM parameter issue.
It can ba also due to a high time step.
Did you check your mesh motion?

[amrit]

yeah..i checked mesh motion... it worked out well with 0.00005 s as time step bt showed the error when i increased the time step to about 0.007s... may b its due to "time step" in my case... thanks a lot...

[aounallah]

the minimum negative volume is due to grid generation
any grid had this message when you check it, the calculation don't start
return to gmabit and verify the mesh first

[-mAx-]

Originally Posted by aounallah

the minimum negative volume is due to grid generation
any grid had this message when you check it, the calculation don't start
return to gmabit and verify the mesh first

No correlation with Gambit

[-mAx-]

Originally Posted by aounallah

the minimum negative volume is due to grid generation
any grid had this message when you check it, the calculation don't start
return to gmabit and verify the mesh first

His initial mesh should be fine, and the error appears as the mesh is moving.
So it is a MDM issue, and it should be solved within Fluent. Gambit has nothing to do with Remeshing stuffs (Moving mesh)