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sqr(Ct)*k is missing in twoPhaseEulerFoam 2.2.x?

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Old   December 24, 2014, 15:30
Default sqr(Ct)*k is missing in twoPhaseEulerFoam 2.2.x?
  #1
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Dongyue Li
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Hi guys,

I found this in Ueqn:
Code:
volTensorField Rc1
        (
            "Rc1",
            (((2.0/3.0)*I)*nuEff1)*tr(gradU1T) - nuEff1*gradU1T
        );
but in openfoam 2.0.x its like:
Code:
volTensorField Rca
        (
            "Rca",
            ((2.0/3.0)*I)*(sqr(Ct)*k + nuEffa*tr(gradUaT)) - nuEffa*gradUaT
        );
mathematically, there should be this sqr(Ct)*k in the code, see the last term:


I also found this thread:
http://www.cfd-online.com/Forums/ope...eulerfoam.html

Any ideas?
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Old   December 24, 2014, 15:40
Default tr(grad(U))*I equals fvc::div(U)*I?
  #2
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Dongyue Li
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also :
from math equations;we know:

tr \left( {\nabla U} \right) \cdot I = \nabla  \cdot U \cdot I

so if I translate it into code: does tr(grad(U))*I equal fvc::div(U)*I?

Thanks!!
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