OpenFoam implementation of Wilcox's latest k-omega model

swetkyz · September 13, 2011, 09:37

Does anyone know if OpenFoam has an implementation of David Wilcox's latest k-omega turbulence model? I am specifically referring to the one referenced in:

"Formulation of the k-omega Turbulence Model Revisited"
David Wilcox
AIAA Journal Nov. 2008

I have found his older model (kOmega)...

Thanks in advance.

romant · September 14, 2011, 03:08

The implementation of the kOmega in OpenFOAM is from 1988, it is already different from the 2006 version (Wilcox, Turbulence Modeling for CFD, 3rd Edition,2006).

It should not be too hard to change the equation and recompile the model with. The version from 2006 for example is missing the stress delimiter and the cross diffusion term. Both of them are fairly easily added to the equations already in place under $FOAM_SRC/turbulenceModels/incompressible/RAS/kOmega. You would need some C++ knowledge though in order to modify the model.

swetkyz · September 14, 2011, 08:12

Thank you romant. This helps greatly.

Fanfei · June 19, 2017, 11:05

Quote:

Originally Posted by swetkyz

Thank you romant. This helps greatly.

Hi
Have you implemented the turbulece model of wilcox 2008 to the openfoam. I have the question about how to express the Xw in the equtation. If you finished it, can you give some advices.
Sincely yours
Fan

September 13, 2011, 09:37	OpenFoam implementation of Wilcox's latest k-omega model	#1
swetkyz Member Zachariah Swetky Join Date: Aug 2011 Posts: 36 Rep Power: 14	Does anyone know if OpenFoam has an implementation of David Wilcox's latest k-omega turbulence model? I am specifically referring to the one referenced in: "Formulation of the k-omega Turbulence Model Revisited" David Wilcox AIAA Journal Nov. 2008 I have found his older model (kOmega)... Thanks in advance. fumiya likes this.

September 14, 2011, 03:08		#2
romant Senior Member Roman Thiele Join Date: Aug 2009 Location: Eindhoven, NL Posts: 374 Rep Power: 20	The implementation of the kOmega in OpenFOAM is from 1988, it is already different from the 2006 version (Wilcox, Turbulence Modeling for CFD, 3rd Edition,2006). It should not be too hard to change the equation and recompile the model with. The version from 2006 for example is missing the stress delimiter and the cross diffusion term. Both of them are fairly easily added to the equations already in place under $FOAM_SRC/turbulenceModels/incompressible/RAS/kOmega. You would need some C++ knowledge though in order to modify the model. fumiya likes this. __________________ ~roman

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September 14, 2011, 08:12		#3
swetkyz Member Zachariah Swetky Join Date: Aug 2011 Posts: 36 Rep Power: 14	Thank you romant. This helps greatly.