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I donbt want to use wall funtions How can I do it

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Old   July 26, 2006, 17:35
Default We are implementing a turbulen
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Pablo Cornejo Olivares
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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?
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Old   July 26, 2006, 19:15
Default I don't know the answer to you
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Srinath Madhavan (a.k.a pUl|)
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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)?
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Old   July 27, 2006, 01:48
Default The wall functions in OpenFOAM
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Hrvoje Jasak
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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?
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Old   July 29, 2006, 17:48
Default as soon as possible...
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as soon as possible...
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