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Convergence Issue Of RMS Mass Vapour in RPI Boiling Model in CFX

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Old   June 28, 2016, 01:58
Default Convergence Issue Of RMS Mass Vapour in RPI Boiling Model in CFX
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I am facing trouble in convergence of RMS Mass Vapour in CFX. All other RMS criteria are well met but RMS Mass Vapour value is 3.1E-3 and it decreases to 3E-3 after more than 150 iterations. I am dealing with subcooled boiling with constant heat flux in an assembly. What should I do ? I mean could there be a way to ensure that it converges like there are under relaxation factors in Fluent. What should I do for convergence of RMS Mass Vapour in this case ? Your kind suggestions would be appreciated. Thanks!!
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Old   May 28, 2018, 03:56
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Hello Tahir,

I have almost same problem. How did you solve it?

Thanks


Quote:
Originally Posted by nomi.tahir View Post
I am facing trouble in convergence of RMS Mass Vapour in CFX. All other RMS criteria are well met but RMS Mass Vapour value is 3.1E-3 and it decreases to 3E-3 after more than 150 iterations. I am dealing with subcooled boiling with constant heat flux in an assembly. What should I do ? I mean could there be a way to ensure that it converges like there are under relaxation factors in Fluent. What should I do for convergence of RMS Mass Vapour in this case ? Your kind suggestions would be appreciated. Thanks!!
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