193 lines
5.3 KiB
C++
193 lines
5.3 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2011-2016 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::nutWallFunctionFvPatchScalarField
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Group
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grpWallFunctions
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Description
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This boundary condition provides a turbulent kinematic viscosity condition
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when using wall functions, based on turbulence kinetic energy.
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- replicates OpenFOAM v1.5 (and earlier) behaviour
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Usage
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\table
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Property | Description | Required | Default value
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Cmu | Cmu coefficient | no | 0.09
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kappa | Von Karman constant | no | 0.41
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E | E coefficient | no | 9.8
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\endtable
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Examples of the boundary condition specification:
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\verbatim
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<patchName>
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{
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type nutWallFunction;
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value uniform 0.0;
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}
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\endverbatim
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Reference for the default model coefficients:
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\verbatim
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H. Versteeg, W. Malalasekera
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An Introduction to Computational Fluid Dynamics: The Finite Volume
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Method, subsection "3.5.2 k-epsilon model"
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\endverbatim
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See also
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Foam::fixedValueFvPatchField
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SourceFiles
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nutWallFunctionFvPatchScalarField.C
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\*---------------------------------------------------------------------------*/
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#ifndef nutWallFunctionFvPatchScalarField_H
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#define nutWallFunctionFvPatchScalarField_H
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#include "fixedValueFvPatchFields.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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/*---------------------------------------------------------------------------*\
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Class nutWallFunctionFvPatchScalarField Declaration
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\*---------------------------------------------------------------------------*/
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class nutWallFunctionFvPatchScalarField
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:
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public fixedValueFvPatchScalarField
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{
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protected:
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// Protected data
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//- Cmu coefficient
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scalar Cmu_;
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//- Von Karman constant
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scalar kappa_;
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//- E coefficient
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scalar E_;
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//- Y+ at the edge of the laminar sublayer
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scalar yPlusLam_;
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// Protected Member Functions
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//- Check the type of the patch
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virtual void checkType();
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//- Calculate the turbulence viscosity
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virtual tmp<scalarField> calcNut() const = 0;
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//- Write local wall function variables
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virtual void writeLocalEntries(Ostream&) const;
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public:
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//- Runtime type information
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TypeName("nutWallFunction");
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// Constructors
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//- Construct from patch and internal field
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nutWallFunctionFvPatchScalarField
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(
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const fvPatch&,
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const DimensionedField<scalar, volMesh>&
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);
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//- Construct from patch, internal field and dictionary
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nutWallFunctionFvPatchScalarField
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(
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const fvPatch&,
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const DimensionedField<scalar, volMesh>&,
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const dictionary&
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);
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//- Construct by mapping given
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// nutWallFunctionFvPatchScalarField
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// onto a new patch
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nutWallFunctionFvPatchScalarField
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(
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const nutWallFunctionFvPatchScalarField&,
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const fvPatch&,
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const DimensionedField<scalar, volMesh>&,
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const fvPatchFieldMapper&
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);
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//- Construct as copy
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nutWallFunctionFvPatchScalarField
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(
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const nutWallFunctionFvPatchScalarField&
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);
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//- Construct as copy setting internal field reference
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nutWallFunctionFvPatchScalarField
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(
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const nutWallFunctionFvPatchScalarField&,
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const DimensionedField<scalar, volMesh>&
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);
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// Member functions
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//- Calculate the Y+ at the edge of the laminar sublayer
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static scalar yPlusLam(const scalar kappa, const scalar E);
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//- Calculate and return the yPlus at the boundary
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virtual tmp<scalarField> yPlus() const = 0;
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// Evaluation functions
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//- Update the coefficients associated with the patch field
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virtual void updateCoeffs();
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// I-O
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//- Write
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virtual void write(Ostream&) const;
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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