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Multiphase Compressible Turbulence Model

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Old   September 26, 2011, 04:02
Default Multiphase Compressible Turbulence Model
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George Wakeham
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Hi I'am trying to simulate compressible cavitating flow, there are various papers I have read stating you need to have the beta and beta* coefficients as variables of the mach number. Now I have tried using CEL functions to do this but get an error saying that the coeffs must be calculated to a constant value (and thus cannot vary). Is there any way to get around this?

Thank you for your time.
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Old   September 26, 2011, 06:21
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Glenn Horrocks
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Variable constants is not implemented in CFX so it cannot do it.

But there is always a way. Have a look in the VARIABLES file, I think it is in the /etc/ directory. Find the beta and beta* variables and remove the bit forcing them to be constant values. There is a chance this will allow it, but be aware the limitation was put in there for good reason so there is a high probability this will not work.
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Old   September 26, 2011, 06:50
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George Wakeham
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Thank you very much, I'll check it out
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cavitation, compressible flow, multi phase, turbulence model

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