variable CMU for kEpsilon model

vcvedant · August 1, 2017, 10:42

Hello Foamers,

I want to change change $C_\mu$ for kEpsilon model and define it as a local variable for the whole domain.
So, $\nu_t = C_\mu \frac{k^2}{\varepsilon}$ would remain same but
$C_\mu = f(x,y)$

Currently it is defined as dimensionedScalar. I am thinking that first I should define it as volScalarField and then do the changes.
I would appreciate any help and guidance.

Thanks

fumiya · August 5, 2017, 23:22

Cmu is volScalarField in the realizableKE model.
I think it will be of reference to you.

Best regards,
Fumiya

vcvedant · August 9, 2017, 10:03

Thanks Fumiya for your response. I started with realizable k-espilon model as reference.
Yours blogs are really helpful to understand and work with OpenFOAM.

KingKraut · March 8, 2022, 04:35

Hi vcvedant,
although quite long ago, but did you manage to implement Cmu as a space-dependent field? I would like to do the same, however, did not yet manage to do as in the realizableKE-model.
Thanks a lot in advance and all the best

August 1, 2017, 10:42	variable CMU for kEpsilon model	#1
vcvedant Member Vedamt Chittlangia Join Date: Feb 2016 Posts: 64 Rep Power: 9	Hello Foamers, I want to change change $C_\mu$ for kEpsilon model and define it as a local variable for the whole domain. So, $\nu_t = C_\mu \frac{k^2}{\varepsilon}$ would remain same but $C_\mu = f(x,y)$ Currently it is defined as dimensionedScalar. I am thinking that first I should define it as volScalarField and then do the changes. I would appreciate any help and guidance. Thanks

August 5, 2017, 23:22		#2
fumiya Senior Member Fumiya Nozaki Join Date: Jun 2010 Location: Yokohama, Japan Posts: 266 Blog Entries: 1 Rep Power: 19	Cmu is volScalarField in the realizableKE model. I think it will be of reference to you. Best regards, Fumiya ancolli likes this. __________________ [Personal] Blog: https://caefn.com/ Twitter: https://twitter.com/FumiyaNozaki SlideShare: http://www.slideshare.net/fumiyanozaki96

March 8, 2022, 04:35	did it work? :-)	#4
KingKraut Member Jo Mar Join Date: Jun 2015 Posts: 54 Rep Power: 10	Hi vcvedant, although quite long ago, but did you manage to implement Cmu as a space-dependent field? I would like to do the same, however, did not yet manage to do as in the realizableKE-model. Thanks a lot in advance and all the best

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August 9, 2017, 10:03		#3
vcvedant Member Vedamt Chittlangia Join Date: Feb 2016 Posts: 64 Rep Power: 9	Thanks Fumiya for your response. I started with realizable k-espilon model as reference. Yours blogs are really helpful to understand and work with OpenFOAM.