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-   -   Convergence issues with Mixture model, when gas treatment changed to ideal gas (http://www.cfd-online.com/Forums/fluent-multiphase/123841-convergence-issues-mixture-model-when-gas-treatment-changed-ideal-gas.html)

DVS September 22, 2013 15:20

Convergence issues with Mixture model, when gas treatment changed to ideal gas
 
Hello,

I have been trying to simulate gas induction in a nozzle-ejector geometry. Where gas is en trained because of the flowing water jet. I set up a simpler run where gas density was taken constant and the run converged. However, when I changed the gas behavior to ideal gas it is showing ÄMG Divergence error in all equations. I have been tried first and second order discretization schemes but still nothing. Please help. Thank you.

mhdmk September 23, 2013 11:59

try small mesh size and under relax all variables specially density and volume fraction


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