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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011-2013 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Class
Foam::XiGModels::basicSubGrid
Description
Basic sub-grid obstacle flame-wrinking generation rate coefficient model.
Details supplied by J Puttock 2/7/06.
\f$ G_{sub} \f$ denotes the generation coefficient and it is given by
\f[
G_{sub} = k_{1} /frac{\vert \dwea{\vec{U}} \vert}{L_{obs}}
\frac{/Xi_{{sub}_{eq}}-1}{/Xi_{sub}}
\f]
and the removal:
\f[
- k_{1} /frac{\vert \dwea{\vec{U}} \vert}{L_{sub}}
\frac{\Xi_{sub}-1}{\Xi_{sub}}
\f]
Finally, \f$ G_{sub} \f$ is added to generation rate \f$ G_{in} \f$
due to the turbulence.
SourceFiles
basicSubGrid.C
\*---------------------------------------------------------------------------*/
#ifndef basicSubGrid_H
#define basicSubGrid_H
#include "XiGModel.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace XiGModels
{
/*---------------------------------------------------------------------------*\
Class basicSubGrid Declaration
\*---------------------------------------------------------------------------*/
class basicSubGrid
:
public XiGModel
{
// Private data
//- Sub-grid generation rate coefficient
scalar k1;
//- Xi generation rate model due to turbulence
autoPtr<XiGModel> XiGModel_;
// Private Member Functions
//- Disallow copy construct
basicSubGrid(const basicSubGrid&);
//- Disallow default bitwise assignment
void operator=(const basicSubGrid&);
public:
//- Runtime type information
TypeName("basicSubGridG");
// Constructors
//- Construct from components
basicSubGrid
(
const dictionary& XiGProperties,
const psiuReactionThermo& thermo,
const compressible::RASModel& turbulence,
const volScalarField& Su
);
//- Destructor
virtual ~basicSubGrid();
// Member Functions
//- Return the flame-wrinking generation rate
virtual tmp<volScalarField> G() const;
//- Return the flame diffusivity
virtual tmp<volScalarField> Db() const;
//- Update properties from given dictionary
virtual bool read(const dictionary& XiGProperties);
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace XiGModels
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
|
