137 lines
3.6 KiB
C++
137 lines
3.6 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 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::XiGModel::basicSubGrid
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Description
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Basic sub-grid obstacle flame-wrinking generation rate coefficient model.
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Details supplied by J Puttock 2/7/06.
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\f$ G_{sub} \f$ denotes the generation coefficient and it is given by
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\f[
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G_{sub} = k_{1} /frac{\vert \dwea{\vec{U}} \vert}{L_{obs}}
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\frac{/Xi_{{sub}_{eq}}-1}{/Xi_{sub}}
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\f]
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and the removal:
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\f[ - k_{1} /frac{\vert \dwea{\vec{U}} \vert}{L_{sub}}
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\frac{\Xi_{sub}-1}{\Xi_{sub}} \f]
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Finally, \f$ G_{sub} \f$ is added to generation rate \f$ G_{in} \f$
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due to the turbulence.
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SourceFiles
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basicSubGrid.C
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\*---------------------------------------------------------------------------*/
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#ifndef basicSubGrid_H
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#define basicSubGrid_H
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#include "XiGModel.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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namespace XiGModels
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{
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/*---------------------------------------------------------------------------*\
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Class basicSubGrid Declaration
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\*---------------------------------------------------------------------------*/
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class basicSubGrid
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:
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public XiGModel
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{
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// Private data
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//- Sub-grid generation rate coefficient
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scalar k1;
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//- Xi generation rate model due to turbulence
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autoPtr<XiGModel> XiGModel_;
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// Private Member Functions
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//- Disallow copy construct
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basicSubGrid(const basicSubGrid&);
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//- Disallow default bitwise assignment
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void operator=(const basicSubGrid&);
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public:
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//- Runtime type information
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TypeName("basicSubGridG");
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// Constructors
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//- Construct from components
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basicSubGrid
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(
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const dictionary& XiGProperties,
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const hhuCombustionThermo& thermo,
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const compressible::RASModel& turbulence,
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const volScalarField& Su
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);
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//- Destructor
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virtual ~basicSubGrid();
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// Member Functions
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//- Return the flame-wrinking generation rate
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virtual tmp<volScalarField> G() const;
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//- Return the flame diffusivity
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virtual tmp<volScalarField> Db() const;
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//- Update properties from given dictionary
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virtual bool read(const dictionary& XiGProperties);
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace XiGModels
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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