[pablo]

We are implementing a turbulence potential model into OpenFOAM, in fact we already done it .

in short, I don't wanna use wall function. How can I get turn off this option?

[msrinath80]

I don't know the answer to your question, but out of curiosity, are you resolving the flow all the way down to the wall (similar to Fluent's Enhanced Wall Treatment approach)?

[hjasak]

The wall functions in OpenFOAM are implemented by manipulating the generation term, the dissipation on the wall and wall viscosity. Have a look at the following file:

OpenFOAM-1.3/src/turbulenceModels/incompressible/kEpsilon/kEpsilon.C

in kEpsilon::correct() there are 3 #include files:

wallFunctionsI.H
wallDissipationI.H

wallViscosityI.H

The first one specifies G and epilon near the wall, the second one blocks out the calculation of epsilon in near-wall cells and the third one fixes the near-wall viscosity.

If you do not wish to use the wall functions, do not use this in your model. An example of a model with no wall functions is OpenFOAM-1.3/src/turbulenceModels/incompressible/LaunderSharmaKE.

As you can see, equations are solved without manipulation.

Enjoy,

Hrv

P.S. Which model are you implementing + how come we haven't already got it?

[pablo]

as soon as possible...