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286 lines
7.9 KiB
C++
286 lines
7.9 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) 2011-2013 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::epsilonWallFunctionFvPatchScalarField
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Group
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grpWallFunctions
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Description
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This boundary condition provides a turbulence dissipation wall function
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condition for high Reynolds number, turbulent flow cases.
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The condition can be applied to wall boundaries, whereby it
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- calculates \c epsilon and \c G
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- inserts near wall epsilon values directly into the epsilon equation
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to act as a constraint
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where
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\vartable
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epsilon | turblence dissipation field
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G | turblence generation field
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\endvartable
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\heading Patch usage
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\table
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Property | Description | Required | Default value
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Cmu | model coefficient | no | 0.09
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kappa | Von Karman constant | no | 0.41
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E | model coefficient | no | 9.8
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\endtable
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Example of the boundary condition specification:
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\verbatim
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myPatch
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{
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type epsilonWallFunction;
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}
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\endverbatim
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SeeAlso
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Foam::fixedInternalValueFvPatchField
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SourceFiles
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epsilonWallFunctionFvPatchScalarField.C
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\*---------------------------------------------------------------------------*/
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#ifndef epsilonWallFunctionFvPatchScalarField_H
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#define epsilonWallFunctionFvPatchScalarField_H
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#include "fixedValueFvPatchField.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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class turbulenceModel;
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/*---------------------------------------------------------------------------*\
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Class epsilonWallFunctionFvPatchScalarField Declaration
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\*---------------------------------------------------------------------------*/
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class epsilonWallFunctionFvPatchScalarField
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:
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public fixedValueFvPatchField<scalar>
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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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//- Local copy of turbulence G field
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scalarField G_;
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//- Local copy of turbulence epsilon field
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scalarField epsilon_;
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//- Initialised flag
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bool initialised_;
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//- Master patch ID
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label master_;
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//- List of averaging corner weights
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List<List<scalar> > cornerWeights_;
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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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//- Write local wall function variables
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virtual void writeLocalEntries(Ostream&) const;
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//- Set the master patch - master is responsible for updating all
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// wall function patches
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virtual void setMaster();
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//- Create the averaging weights for cells which are bounded by
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// multiple wall function faces
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virtual void createAveragingWeights();
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//- Helper function to return non-const access to an epsilon patch
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virtual epsilonWallFunctionFvPatchScalarField& epsilonPatch
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(
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const label patchi
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);
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//- Main driver to calculate the turbulence fields
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virtual void calculateTurbulenceFields
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(
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const turbulenceModel& turbulence,
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scalarField& G0,
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scalarField& epsilon0
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);
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//- Calculate the epsilon and G
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virtual void calculate
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(
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const turbulenceModel& turbulence,
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const List<scalar>& cornerWeights,
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const fvPatch& patch,
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scalarField& G,
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scalarField& epsilon
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);
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//- Return non-const access to the master patch ID
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virtual label& master()
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{
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return master_;
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}
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public:
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//- Runtime type information
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TypeName("epsilonWallFunction");
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// Constructors
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//- Construct from patch and internal field
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epsilonWallFunctionFvPatchScalarField
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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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epsilonWallFunctionFvPatchScalarField
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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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// epsilonWallFunctionFvPatchScalarField
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// onto a new patch
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epsilonWallFunctionFvPatchScalarField
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(
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const epsilonWallFunctionFvPatchScalarField&,
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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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epsilonWallFunctionFvPatchScalarField
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(
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const epsilonWallFunctionFvPatchScalarField&
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);
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//- Construct and return a clone
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virtual tmp<fvPatchScalarField> clone() const
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{
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return tmp<fvPatchScalarField>
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(
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new epsilonWallFunctionFvPatchScalarField(*this)
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);
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}
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//- Construct as copy setting internal field reference
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epsilonWallFunctionFvPatchScalarField
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(
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const epsilonWallFunctionFvPatchScalarField&,
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const DimensionedField<scalar, volMesh>&
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);
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//- Construct and return a clone setting internal field reference
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virtual tmp<fvPatchScalarField> clone
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(
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const DimensionedField<scalar, volMesh>& iF
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) const
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{
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return tmp<fvPatchScalarField>
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(
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new epsilonWallFunctionFvPatchScalarField(*this, iF)
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);
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}
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//- Destructor
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virtual ~epsilonWallFunctionFvPatchScalarField()
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{}
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// Member functions
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// Access
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//- Return non-const access to the master's G field
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scalarField& G(bool init = false);
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//- Return non-const access to the master's epsilon field
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scalarField& epsilon(bool init = false);
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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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//- Update the coefficients associated with the patch field
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virtual void updateCoeffs(const scalarField& weights);
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//- Manipulate matrix
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virtual void manipulateMatrix(fvMatrix<scalar>& matrix);
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//- Manipulate matrix with given weights
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virtual void manipulateMatrix
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(
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fvMatrix<scalar>& matrix,
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const scalarField& weights
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);
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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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