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wallNonlinearViscosityI.H

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00001 /*---------------------------------------------------------------------------*\
00002   =========                 |
00003   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
00004    \\    /   O peration     |
00005     \\  /    A nd           | Copyright (C) 1991-2005 OpenCFD Ltd.
00006      \\/     M anipulation  |
00007 -------------------------------------------------------------------------------
00008 License
00009     This file is part of OpenFOAM.
00010 
00011     OpenFOAM is free software; you can redistribute it and/or modify it
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00015 
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00019     for more details.
00020 
00021     You should have received a copy of the GNU General Public License
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00023     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
00024 
00025 Global
00026     wallNonlinearViscosity
00027 
00028 Description
00029     Calculate wall viscosity for non-linear models
00030 
00031 \*---------------------------------------------------------------------------*/
00032 
00033 {
00034     const fvPatchList& patches = mesh_.boundary();
00035 
00036     forAll(patches, patchi)
00037     {
00038         const fvPatch& curPatch = patches[patchi];
00039 
00040         if (isType<wallFvPatch>(curPatch))
00041         {
00042             const scalarField& nuw = nu().boundaryField()[patchi];
00043             scalarField& nutw = nut_.boundaryField()[patchi];
00044 
00045             forAll(curPatch, facei)
00046             {
00047                 label faceCelli = curPatch.faceCells()[facei];
00048 
00049                 //- Using local Cmu
00050                 scalar Cmu25 = pow(Cmu[faceCelli], 0.25);
00051 
00052                 scalar yPlus =
00053                     Cmu25*y_[patchi][facei]*sqrt(k_[faceCelli])/nuw[facei];
00054 
00055                 if (yPlus > yPlusLam_)
00056                 {
00057                     nutw[facei] = nuw[facei]
00058                         *(yPlus*kappa_/log(E_*yPlus) - 1);
00059                 }
00060                 else
00061                 {
00062                     nutw[facei] = 0.0;
00063                 }
00064             }
00065         }
00066     }
00067 }
00068 
00069 
00070 // ************************************************************************* //
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