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Non positive volume after solver settings

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Old   April 8, 2009, 04:50
Default Non positive volume after solver settings
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Hi everyone,

I run a case without problem with first order densty, momentum,... about 1000 iterations.Before run the case, i also check grid and no problem arises.But when i change properties of density and momentum to second order, FLUENT gives a problem of "non positive volume exist". Moreover i face with this problem at a specific Mach number.

Thanks for your replys

P.S:FLUENT world is really strange!
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