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-   -   turbulent dissipation rate (http://www.cfd-online.com/Forums/star-ccm/69123-turbulent-dissipation-rate.html)

pluto October 12, 2009 17:37

turbulent dissipation rate
 
hi guys,

i am modelling a multiphase flow and when i begin my simulation i am getting a floating point error. the problem appears to be the turbulent dissipation rate (tdr) because as the residuals start the tdr graph continues to increase and does not converge. I've increased the tdr and turbulent kinetic rate (tkr) values and i no longer receive a floating point error. Can somebody please help me in choosing a suitable value for these two rates. the multiphase flow is air and water

thanks for the help

emanuele October 15, 2009 17:19

Are you working with dof model or steady?

vishyaroon October 16, 2009 08:56

Do you have the "Cell Quality Remediation" activated in your physics? If you have then you may want to check your initialization.

pluto November 11, 2009 15:41

I apologize for the late response. The model is steady. Yes, I have enable cell remediation in the physics model

Thanks for the assistance


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