Commit 649c29f9 authored by quant's avatar quant
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parent 89db0b5a
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | www.openfoam.com
\\/ M anipulation |
-------------------------------------------------------------------------------
Copyright (C) 2011-2015 OpenFOAM Foundation
-------------------------------------------------------------------------------
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::PDRDragModel
Description
Base-class for sub-grid obstacle drag models. The available drag model is at
\link basic.H \endlink.
SourceFiles
PDRDragModel.C
\*---------------------------------------------------------------------------*/
#ifndef PDRDragModel_H
#define PDRDragModel_H
#include "IOdictionary.H"
#include "psiuReactionThermo.H"
#include "turbulentFluidThermoModel.H"
#include "multivariateSurfaceInterpolationScheme.H"
#include "runTimeSelectionTables.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class PDRDragModel Declaration
\*---------------------------------------------------------------------------*/
class PDRDragModel
:
public regIOobject
{
protected:
// Protected data
dictionary PDRDragModelCoeffs_;
const compressible::RASModel& turbulence_;
const volScalarField& rho_;
const volVectorField& U_;
const surfaceScalarField& phi_;
bool on_;
private:
// Private Member Functions
//- No copy construct
PDRDragModel(const PDRDragModel&) = delete;
//- No copy assignment
void operator=(const PDRDragModel&) = delete;
public:
//- Runtime type information
TypeName("PDRDragModel");
// Declare run-time constructor selection table
declareRunTimeSelectionTable
(
autoPtr,
PDRDragModel,
dictionary,
(
const dictionary& PDRProperties,
const compressible::RASModel& turbulence,
const volScalarField& rho,
const volVectorField& U,
const surfaceScalarField& phi
),
(
PDRProperties,
turbulence,
rho,
U,
phi
)
);
// Selectors
//- Return a reference to the selected Xi model
static autoPtr<PDRDragModel> New
(
const dictionary& PDRProperties,
const compressible::RASModel& turbulence,
const volScalarField& rho,
const volVectorField& U,
const surfaceScalarField& phi
);
// Constructors
//- Construct from components
PDRDragModel
(
const dictionary& PDRProperties,
const compressible::RASModel& turbulence,
const volScalarField& rho,
const volVectorField& U,
const surfaceScalarField& phi
);
//- Destructor
virtual ~PDRDragModel();
// Member Functions
//- Return true if the drag model is switched on
bool on() const
{
return on_;
}
//- Return the momentum drag coefficient
virtual tmp<volSymmTensorField> Dcu() const = 0;
//- Return the momentum drag turbulence generation rate
virtual tmp<volScalarField> Gk() const = 0;
//- Inherit read from regIOobject
using regIOobject::read;
//- Update properties from given dictionary
virtual bool read(const dictionary& PDRProperties) = 0;
virtual bool writeData(Ostream&) const
{
return true;
}
virtual void writeFields() const
{
NotImplemented;
}
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | www.openfoam.com
\\/ M anipulation |
-------------------------------------------------------------------------------
Copyright (C) 2011-2015 OpenFOAM Foundation
Copyright (C) 2019-2021 OpenCFD Ltd.
-------------------------------------------------------------------------------
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/>.
\*---------------------------------------------------------------------------*/
#include "PDRDragModel.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Foam::autoPtr<Foam::PDRDragModel> Foam::PDRDragModel::New
(
const dictionary& dict,
const compressible::RASModel& turbulence,
const volScalarField& rho,
const volVectorField& U,
const surfaceScalarField& phi
)
{
const word modelType(dict.get<word>("PDRDragModel"));
Info<< "Selecting drag model " << modelType << endl;
auto* ctorPtr = dictionaryConstructorTable(modelType);
if (!ctorPtr)
{
FatalIOErrorInLookup
(
dict,
"PDRDragModel",
modelType,
*dictionaryConstructorTablePtr_
) << exit(FatalIOError);
}
return autoPtr<PDRDragModel>
(
ctorPtr(dict, turbulence, rho, U, phi)
);
}
// ************************************************************************* //
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | www.openfoam.com
\\/ M anipulation |
-------------------------------------------------------------------------------
Copyright (C) 2011-2016 OpenFOAM Foundation
-------------------------------------------------------------------------------
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/>.
\*---------------------------------------------------------------------------*/
#include "basic.H"
#include "addToRunTimeSelectionTable.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
namespace PDRDragModels
{
defineTypeNameAndDebug(basic, 0);
addToRunTimeSelectionTable(PDRDragModel, basic, dictionary);
}
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::PDRDragModels::basic::basic
(
const dictionary& PDRProperties,
const compressible::RASModel& turbulence,
const volScalarField& rho,
const volVectorField& U,
const surfaceScalarField& phi
)
:
PDRDragModel(PDRProperties, turbulence, rho, U, phi),
Csu("Csu", dimless, PDRDragModelCoeffs_),
Csk("Csk", dimless, PDRDragModelCoeffs_),
Aw_
(
IOobject
(
"Aw",
U_.mesh().facesInstance(),
U_.mesh(),
IOobject::MUST_READ,
IOobject::NO_WRITE
),
U_.mesh()
),
CR_
(
IOobject
(
"CR",
U_.mesh().facesInstance(),
U_.mesh(),
IOobject::MUST_READ,
IOobject::NO_WRITE
),
U_.mesh()
)
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::PDRDragModels::basic::~basic()
{}
// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
Foam::tmp<Foam::volSymmTensorField> Foam::PDRDragModels::basic::Dcu() const
{
tmp<volSymmTensorField> tDragDcu
(
new volSymmTensorField
(
IOobject
(
"tDragDcu",
U_.mesh().time().constant(),
U_.mesh(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
U_.mesh(),
dimensionedSymmTensor(dimMass/dimTime/dimVolume, Zero)
)
);
volSymmTensorField& DragDcu = tDragDcu.ref();
if (on_)
{
const volScalarField& betav =
U_.db().lookupObject<volScalarField>("betav");
DragDcu =
(0.5*rho_)*CR_*mag(U_) + (Csu*I)*betav*turbulence_.muEff()*sqr(Aw_);
}
return tDragDcu;
}
Foam::tmp<Foam::volScalarField> Foam::PDRDragModels::basic::Gk() const
{
tmp<volScalarField> tGk
(
new volScalarField
(
IOobject
(
"tGk",
U_.mesh().time().constant(),
U_.mesh(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
U_.mesh(),
dimensionedScalar(dimMass/dimLength/pow3(dimTime), Zero)
)
);
volScalarField& Gk = tGk.ref();
if (on_)
{
const volScalarField& betav =
U_.db().lookupObject<volScalarField>("betav");
const volSymmTensorField& CT =
U_.db().lookupObject<volSymmTensorField>("CT");
Gk =
(0.5*rho_)*mag(U_)*(U_ & CT & U_)
+ Csk*betav*turbulence_.muEff()*sqr(Aw_)*magSqr(U_);
}
return tGk;
}
bool Foam::PDRDragModels::basic::read(const dictionary& PDRProperties)
{
PDRDragModel::read(PDRProperties);
PDRDragModelCoeffs_.readEntry("Csu", Csu.value());
PDRDragModelCoeffs_.readEntry("Csk", Csk.value());
return true;
}
void Foam::PDRDragModels::basic::writeFields() const
{
Aw_.write();
CR_.write();
}
// ************************************************************************* //
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | www.openfoam.com
\\/ M anipulation |
-------------------------------------------------------------------------------
Copyright (C) 2011 OpenFOAM Foundation
-------------------------------------------------------------------------------
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::PDRDragModels::basic
Description
Basic sub-grid obstacle drag model.
Details supplied by J Puttock 2/7/06.
<b> Sub-grid drag term </b>
The resistance term (force per unit of volume) is given by:
\f[
R = -\frac{1}{2} \rho \vert \dwea{\vec{U}} \vert \dwea{\vec{U}}.D
\f]
where:
\f$ D \f$ is the tensor field "CR" in \f$ m^{-1} \f$
This is term is treated implicitly in UEqn.H
<b> Sub-grid turbulence generation </b>
The turbulence source term \f$ G_{R} \f$ occurring in the
\f$ \kappa-\epsilon \f$ equations for the generation of turbulence due
to interaction with unresolved obstacles :
\f$ G_{R} = C_{s}\beta_{\nu}
\mu_{eff} A_{w}^{2}(\dwea{\vec{U}}-\dwea{\vec{U}_{s}})^2 + \frac{1}{2}
\rho \vert \dwea{\vec{U}} \vert \dwea{\vec{U}}.T.\dwea{\vec{U}} \f$
where:
\f$ C_{s} \f$ = 1
\f$ \beta_{\nu} \f$ is the volume porosity (file "betav").
\f$ \mu_{eff} \f$ is the effective viscosity.
\f$ A_{w}^{2}\f$ is the obstacle surface area per unit of volume
(file "Aw").
\f$ \dwea{\vec{U}_{s}} \f$ is the slip velocity and is considered
\f$ \frac{1}{2}. \dwea{\vec{U}} \f$.
\f$ T \f$ is a tensor in the file CT.
The term \f$ G_{R} \f$ is treated explicitly in the \f$ \kappa-\epsilon
\f$ Eqs in the \link PDRkEpsilon.C \endlink file.
SourceFiles
basic.C
\*---------------------------------------------------------------------------*/
#ifndef basic_H
#define basic_H
#include "PDRDragModel.H"
#include "XiEqModel.H"
namespace Foam
{
namespace PDRDragModels
{
/*---------------------------------------------------------------------------*\
Class basic Declaration
\*---------------------------------------------------------------------------*/
class basic
:
public PDRDragModel
{
// Private data
dimensionedScalar Csu;
dimensionedScalar Csk;
volScalarField Aw_;
volSymmTensorField CR_;
// Private Member Functions
//- No copy construct
basic(const basic&) = delete;
//- No copy assignment
void operator=(const basic&) = delete;
public:
//- Runtime type information
TypeName("basic");
// Constructors
//- Construct from components
basic
(
const dictionary& PDRProperties,
const compressible::RASModel& turbulence,
const volScalarField& rho,
const volVectorField& U,
const surfaceScalarField& phi
);
//- Destructor
virtual ~basic();
// Member Functions
//- Return the momentum drag coefficient
virtual tmp<volSymmTensorField> Dcu() const;
//- Return the momentum drag turbulence generation rate
virtual tmp<volScalarField> Gk() const;
//- Update properties from given dictionary
virtual bool read(const dictionary& PDRProperties);
//- Write fields
void writeFields() const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace PDRDragModels
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | www.openfoam.com
\\/ M anipulation |
-------------------------------------------------------------------------------
Copyright (C) 2011-2016 OpenFOAM Foundation
-------------------------------------------------------------------------------
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/>.
Global
CourantNo
Description
Calculates and outputs the mean and maximum Courant Numbers.
\*---------------------------------------------------------------------------*/
{
scalar meanStCoNum = 0.0;
if (mesh.nInternalFaces())
{
scalarField sumPhi
(
fvc::surfaceSum(mag(phiSt))().primitiveField()
/ rho.primitiveField()
);
StCoNum = 0.5*gMax(sumPhi/mesh.V().field())*runTime.deltaTValue();
meanStCoNum =
0.5*(gSum(sumPhi)/gSum(mesh.V().field()))*runTime.deltaTValue();
}
Info<< "St courant Number mean: " << meanStCoNum
<< " max: " << StCoNum << endl;
}
// ************************************************************************* //
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