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how to add turbulent dispersion term in twoPhaseEulerFoam?

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Old   April 21, 2015, 09:18
Default how to add turbulent dispersion term in twoPhaseEulerFoam?
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Yucheng Fu
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In the twoPhaseEulerFoam/constant/phaseProperties file, there is a term called turbulent dispersion term. But it's left blank in tutorials. Which kind of format should I follow if I want to add that term in the problem?
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Old   April 21, 2015, 17:06
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Hello,

if you want to use the turbulent dispersion force, you have to define the coefficient Ctd. There are different models defined under twoPhaseEulerFoam/interfacialModels/turbulentDispersionModels/.
A constant coefficient is defined by
Code:
        type            constantCoefficient;
        Ctd             0.1;
There is also a model after Gosman, which I'm not familiar with. It needs a definition of sigma.

If you are unsure what variables need to be defined or how a term is implemented have a look at the source code. In the header-file is often also a reference paper for further reading given.

Regards,
hester
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Old   April 28, 2015, 00:04
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Yucheng Fu
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Hi,hester
Thank you for your help, I think my question is solved
according to your responding!
Quote:
Originally Posted by hester View Post
Hello,

if you want to use the turbulent dispersion force, you have to define the coefficient Ctd. There are different models defined under twoPhaseEulerFoam/interfacialModels/turbulentDispersionModels/.
A constant coefficient is defined by
Code:
        type            constantCoefficient;
        Ctd             0.1;
There is also a model after Gosman, which I'm not familiar with. It needs a definition of sigma.

If you are unsure what variables need to be defined or how a term is implemented have a look at the source code. In the header-file is often also a reference paper for further reading given.

Regards,
hester
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