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-   -   divergence detected in two phase flow after thousands of iterations?! (http://www.cfd-online.com/Forums/fluent/91606-divergence-detected-two-phase-flow-after-thousands-iterations.html)

emanuel.marsis August 16, 2011 15:05

divergence detected in two phase flow after thousands of iterations?!
 
Hi,

I am simulating a two phase flow in a pump, air and water, and i am using Euler Euler multiphase model...

i reduced my under relaxation factors to 0.1 and 0.2 and the model runs fine in the begining... after thousands of iterations it just explodes, and gives the error message " divergence detected" or the temperature or turbulent viscosity exceeded the limits...

when i turn off my energy equation and use constant density gas, it does not do that... however i need to use ideal gas with the energy equation...

any suggestions?!
Thanks..


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