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MRG: Integrated Foundation code to commit 9f37c3c
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Andrew Heather
248
src/combustionModels/EDC/EDC.C
Normal file
248
src/combustionModels/EDC/EDC.C
Normal file
@ -0,0 +1,248 @@
|
||||
/*---------------------------------------------------------------------------*\
|
||||
========= |
|
||||
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
|
||||
\\ / O peration |
|
||||
\\ / A nd | Copyright (C) 2017 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/>.
|
||||
|
||||
\*---------------------------------------------------------------------------*/
|
||||
|
||||
#include "EDC.H"
|
||||
|
||||
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
|
||||
|
||||
template<class Type>
|
||||
Foam::combustionModels::EDC<Type>::EDC
|
||||
(
|
||||
const word& modelType,
|
||||
const fvMesh& mesh,
|
||||
const word& combustionProperties,
|
||||
const word& phaseName
|
||||
)
|
||||
:
|
||||
laminar<Type>(modelType, mesh, combustionProperties, phaseName),
|
||||
version_
|
||||
(
|
||||
EDCversionNames
|
||||
[
|
||||
this->coeffs().lookupOrDefault
|
||||
(
|
||||
"version",
|
||||
word(EDCversionNames[EDCdefaultVersion])
|
||||
)
|
||||
]
|
||||
),
|
||||
C1_(this->coeffs().lookupOrDefault("C1", 0.05774)),
|
||||
C2_(this->coeffs().lookupOrDefault("C2", 0.5)),
|
||||
Cgamma_(this->coeffs().lookupOrDefault("Cgamma", 2.1377)),
|
||||
Ctau_(this->coeffs().lookupOrDefault("Ctau", 0.4083)),
|
||||
exp1_(this->coeffs().lookupOrDefault("exp1", EDCexp1[int(version_)])),
|
||||
exp2_(this->coeffs().lookupOrDefault("exp2", EDCexp2[int(version_)])),
|
||||
kappa_
|
||||
(
|
||||
IOobject
|
||||
(
|
||||
IOobject::groupName(typeName + ":kappa", phaseName),
|
||||
mesh.time().timeName(),
|
||||
mesh,
|
||||
IOobject::NO_READ,
|
||||
IOobject::AUTO_WRITE
|
||||
),
|
||||
mesh,
|
||||
dimensionedScalar("kappa", dimless, 0)
|
||||
)
|
||||
{}
|
||||
|
||||
|
||||
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
|
||||
|
||||
template<class Type>
|
||||
Foam::combustionModels::EDC<Type>::~EDC()
|
||||
{}
|
||||
|
||||
|
||||
// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
|
||||
|
||||
template<class Type>
|
||||
void Foam::combustionModels::EDC<Type>::correct()
|
||||
{
|
||||
if (this->active())
|
||||
{
|
||||
tmp<volScalarField> tepsilon(this->turbulence().epsilon());
|
||||
const volScalarField& epsilon = tepsilon();
|
||||
|
||||
tmp<volScalarField> tmu(this->turbulence().mu());
|
||||
const volScalarField& mu = tmu();
|
||||
|
||||
tmp<volScalarField> tk(this->turbulence().k());
|
||||
const volScalarField& k = tk();
|
||||
|
||||
tmp<volScalarField> trho(this->rho());
|
||||
const volScalarField& rho = trho();
|
||||
|
||||
scalarField tauStar(epsilon.size(), 0);
|
||||
|
||||
if (version_ == EDCversions::v2016)
|
||||
{
|
||||
tmp<volScalarField> ttc(this->chemistryPtr_->tc());
|
||||
const volScalarField& tc = ttc();
|
||||
|
||||
forAll(tauStar, i)
|
||||
{
|
||||
const scalar nu = mu[i]/(rho[i] + SMALL);
|
||||
|
||||
const scalar Da =
|
||||
max(min(sqrt(nu/(epsilon[i] + SMALL))/tc[i], 10), 1e-10);
|
||||
|
||||
const scalar ReT = sqr(k[i])/(nu*epsilon[i] + SMALL);
|
||||
const scalar CtauI = min(C1_/(Da*sqrt(ReT + 1)), 2.1377);
|
||||
|
||||
const scalar CgammaI =
|
||||
max(min(C2_*sqrt(Da*(ReT + 1)), 5), 0.4082);
|
||||
|
||||
const scalar gammaL =
|
||||
CgammaI*pow025(nu*epsilon[i]/(sqr(k[i]) + SMALL));
|
||||
|
||||
tauStar[i] = CtauI*sqrt(nu/(epsilon[i] + SMALL));
|
||||
|
||||
if (gammaL >= 1)
|
||||
{
|
||||
kappa_[i] = 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
kappa_[i] =
|
||||
max
|
||||
(
|
||||
min
|
||||
(
|
||||
pow(gammaL, exp1_)/(1 - pow(gammaL, exp2_)),
|
||||
1
|
||||
),
|
||||
0
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
forAll(tauStar, i)
|
||||
{
|
||||
const scalar nu = mu[i]/(rho[i] + SMALL);
|
||||
const scalar gammaL =
|
||||
Cgamma_*pow025(nu*epsilon[i]/(sqr(k[i]) + SMALL));
|
||||
|
||||
tauStar[i] = Ctau_*sqrt(nu/(epsilon[i] + SMALL));
|
||||
if (gammaL >= 1)
|
||||
{
|
||||
kappa_[i] = 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
kappa_[i] =
|
||||
max
|
||||
(
|
||||
min
|
||||
(
|
||||
pow(gammaL, exp1_)/(1 - pow(gammaL, exp2_)),
|
||||
1
|
||||
),
|
||||
0
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
this->chemistryPtr_->solve(tauStar);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
template<class Type>
|
||||
Foam::tmp<Foam::fvScalarMatrix>
|
||||
Foam::combustionModels::EDC<Type>::R(volScalarField& Y) const
|
||||
{
|
||||
return kappa_*laminar<Type>::R(Y);
|
||||
}
|
||||
|
||||
|
||||
template<class Type>
|
||||
Foam::tmp<Foam::volScalarField>
|
||||
Foam::combustionModels::EDC<Type>::Qdot() const
|
||||
{
|
||||
tmp<volScalarField> tQdot
|
||||
(
|
||||
new volScalarField
|
||||
(
|
||||
IOobject
|
||||
(
|
||||
IOobject::groupName(typeName + ":Qdot", this->phaseName_),
|
||||
this->mesh().time().timeName(),
|
||||
this->mesh(),
|
||||
IOobject::NO_READ,
|
||||
IOobject::NO_WRITE,
|
||||
false
|
||||
),
|
||||
this->mesh(),
|
||||
dimensionedScalar("Qdot", dimEnergy/dimVolume/dimTime, 0)
|
||||
)
|
||||
);
|
||||
|
||||
if (this->active())
|
||||
{
|
||||
tQdot.ref() = kappa_*this->chemistryPtr_->Qdot();
|
||||
}
|
||||
|
||||
return tQdot;
|
||||
}
|
||||
|
||||
|
||||
template<class Type>
|
||||
bool Foam::combustionModels::EDC<Type>::read()
|
||||
{
|
||||
if (Type::read())
|
||||
{
|
||||
version_ =
|
||||
(
|
||||
EDCversionNames
|
||||
[
|
||||
this->coeffs().lookupOrDefault
|
||||
(
|
||||
"version",
|
||||
word(EDCversionNames[EDCdefaultVersion])
|
||||
)
|
||||
]
|
||||
);
|
||||
C1_ = this->coeffs().lookupOrDefault("C1", 0.05774);
|
||||
C2_ = this->coeffs().lookupOrDefault("C2", 0.5);
|
||||
Cgamma_ = this->coeffs().lookupOrDefault("Cgamma", 2.1377);
|
||||
Ctau_ = this->coeffs().lookupOrDefault("Ctau", 0.4083);
|
||||
exp1_ = this->coeffs().lookupOrDefault("exp1", EDCexp1[int(version_)]);
|
||||
exp2_ = this->coeffs().lookupOrDefault("exp2", EDCexp2[int(version_)]);
|
||||
|
||||
return true;
|
||||
}
|
||||
else
|
||||
{
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// ************************************************************************* //
|
||||
214
src/combustionModels/EDC/EDC.H
Normal file
214
src/combustionModels/EDC/EDC.H
Normal file
@ -0,0 +1,214 @@
|
||||
/*---------------------------------------------------------------------------*\
|
||||
========= |
|
||||
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
|
||||
\\ / O peration |
|
||||
\\ / A nd | Copyright (C) 2017 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::combustionModels::EDC
|
||||
|
||||
Description
|
||||
Eddy Dissipation Concept (EDC) turbulent combustion model.
|
||||
|
||||
This model considers that the reaction occurs in the regions of the flow
|
||||
where the dissipation of turbulence kinetic energy takes place (fine
|
||||
structures). The mass fraction of the fine structures and the mean residence
|
||||
time are provided by an energy cascade model.
|
||||
|
||||
There are many versions and developments of the EDC model, 4 of which are
|
||||
currently supported in this implementation: v1981, v1996, v2005 and
|
||||
v2016. The model variant is selected using the optional \c version entry in
|
||||
the \c EDCCoeffs dictionary, \eg
|
||||
|
||||
\verbatim
|
||||
EDCCoeffs
|
||||
{
|
||||
version v2016;
|
||||
}
|
||||
\endverbatim
|
||||
|
||||
The default version is \c v2015 if the \c version entry is not specified.
|
||||
|
||||
Model versions and references:
|
||||
\verbatim
|
||||
Version v2005:
|
||||
|
||||
Cgamma = 2.1377
|
||||
Ctau = 0.4083
|
||||
kappa = gammaL^exp1 / (1 - gammaL^exp2),
|
||||
|
||||
where exp1 = 2, and exp2 = 2.
|
||||
|
||||
Magnussen, B. F. (2005, June).
|
||||
The Eddy Dissipation Concept -
|
||||
A Bridge Between Science and Technology.
|
||||
In ECCOMAS thematic conference on computational combustion
|
||||
(pp. 21-24).
|
||||
|
||||
Version v1981:
|
||||
|
||||
Changes coefficients exp1 = 3 and exp2 = 3
|
||||
|
||||
Magnussen, B. (1981, January).
|
||||
On the structure of turbulence and a generalized
|
||||
eddy dissipation concept for chemical reaction in turbulent flow.
|
||||
In 19th Aerospace Sciences Meeting (p. 42).
|
||||
|
||||
Version v1996:
|
||||
|
||||
Changes coefficients exp1 = 2 and exp2 = 3
|
||||
|
||||
Gran, I. R., & Magnussen, B. F. (1996).
|
||||
A numerical study of a bluff-body stabilized diffusion flame.
|
||||
Part 2. Influence of combustion modeling and finite-rate chemistry.
|
||||
Combustion Science and Technology, 119(1-6), 191-217.
|
||||
|
||||
Version v2016:
|
||||
|
||||
Use local constants computed from the turbulent Da and Re numbers.
|
||||
|
||||
Parente, A., Malik, M. R., Contino, F., Cuoci, A., & Dally, B. B.
|
||||
(2016).
|
||||
Extension of the Eddy Dissipation Concept for
|
||||
turbulence/chemistry interactions to MILD combustion.
|
||||
Fuel, 163, 98-111.
|
||||
\endverbatim
|
||||
|
||||
SourceFiles
|
||||
EDC.C
|
||||
|
||||
\*---------------------------------------------------------------------------*/
|
||||
|
||||
#ifndef EDC_H
|
||||
#define EDC_H
|
||||
|
||||
#include "../laminar/laminar.H"
|
||||
#include "NamedEnum.H"
|
||||
|
||||
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
||||
|
||||
namespace Foam
|
||||
{
|
||||
namespace combustionModels
|
||||
{
|
||||
|
||||
//- EDC model versions
|
||||
enum class EDCversions
|
||||
{
|
||||
v1981,
|
||||
v1996,
|
||||
v2005,
|
||||
v2016
|
||||
};
|
||||
|
||||
extern const NamedEnum<EDCversions, 4> EDCversionNames;
|
||||
extern const EDCversions EDCdefaultVersion;
|
||||
|
||||
const scalar EDCexp1[] = {3, 2, 2, 2};
|
||||
const scalar EDCexp2[] = {3, 3, 2, 2};
|
||||
|
||||
/*---------------------------------------------------------------------------*\
|
||||
Class EDC Declaration
|
||||
\*---------------------------------------------------------------------------*/
|
||||
|
||||
template<class Type>
|
||||
class EDC
|
||||
:
|
||||
public laminar<Type>
|
||||
{
|
||||
// Private data
|
||||
|
||||
//- The selected model version
|
||||
EDCversions version_;
|
||||
|
||||
scalar C1_;
|
||||
scalar C2_;
|
||||
scalar Cgamma_;
|
||||
scalar Ctau_;
|
||||
scalar exp1_;
|
||||
scalar exp2_;
|
||||
|
||||
//- Mixing parameter
|
||||
volScalarField kappa_;
|
||||
|
||||
|
||||
// Private Member Functions
|
||||
|
||||
//- Disallow copy construct
|
||||
EDC(const EDC&);
|
||||
|
||||
//- Disallow default bitwise assignment
|
||||
void operator=(const EDC&);
|
||||
|
||||
|
||||
public:
|
||||
|
||||
//- Runtime type information
|
||||
TypeName("EDC");
|
||||
|
||||
|
||||
// Constructors
|
||||
|
||||
//- Construct from components
|
||||
EDC
|
||||
(
|
||||
const word& modelType,
|
||||
const fvMesh& mesh,
|
||||
const word& combustionProperties,
|
||||
const word& phaseName
|
||||
);
|
||||
|
||||
|
||||
//- Destructor
|
||||
virtual ~EDC();
|
||||
|
||||
|
||||
// Member Functions
|
||||
|
||||
//- Correct combustion rate
|
||||
virtual void correct();
|
||||
|
||||
//- Fuel consumption rate matrix.
|
||||
virtual tmp<fvScalarMatrix> R(volScalarField& Y) const;
|
||||
|
||||
//- Heat release rate [kg/m/s3]
|
||||
virtual tmp<volScalarField> Qdot() const;
|
||||
|
||||
//- Update properties from given dictionary
|
||||
virtual bool read();
|
||||
};
|
||||
|
||||
|
||||
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
||||
|
||||
} // End namespace combustionModels
|
||||
} // End namespace Foam
|
||||
|
||||
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
||||
|
||||
#ifdef NoRepository
|
||||
#include "EDC.C"
|
||||
#endif
|
||||
|
||||
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
||||
|
||||
#endif
|
||||
|
||||
// ************************************************************************* //
|
||||
61
src/combustionModels/EDC/EDCs.C
Normal file
61
src/combustionModels/EDC/EDCs.C
Normal file
@ -0,0 +1,61 @@
|
||||
/*---------------------------------------------------------------------------*\
|
||||
========= |
|
||||
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
|
||||
\\ / O peration |
|
||||
\\ / A nd | Copyright (C) 2017 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/>.
|
||||
|
||||
\*---------------------------------------------------------------------------*/
|
||||
|
||||
#include "makeCombustionTypes.H"
|
||||
|
||||
#include "psiChemistryCombustion.H"
|
||||
#include "rhoChemistryCombustion.H"
|
||||
#include "EDC.H"
|
||||
|
||||
// * * * * * * * * * * * * * Static Member Data * * * * * * * * * * * * * * //
|
||||
|
||||
template<>
|
||||
const char* Foam::NamedEnum
|
||||
<
|
||||
Foam::combustionModels::EDCversions,
|
||||
4
|
||||
>::names[] =
|
||||
{
|
||||
"v1981",
|
||||
"v1996",
|
||||
"v2005",
|
||||
"v2016"
|
||||
};
|
||||
|
||||
const Foam::NamedEnum<Foam::combustionModels::EDCversions, 4>
|
||||
Foam::combustionModels::EDCversionNames;
|
||||
|
||||
const Foam::combustionModels::EDCversions
|
||||
Foam::combustionModels::EDCdefaultVersion
|
||||
(
|
||||
Foam::combustionModels::EDCversions::v2005
|
||||
);
|
||||
|
||||
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
||||
|
||||
makeCombustionTypes(EDC, psiChemistryCombustion, psiCombustionModel);
|
||||
makeCombustionTypes(EDC, rhoChemistryCombustion, rhoCombustionModel);
|
||||
|
||||
// ************************************************************************* //
|
||||
@ -14,6 +14,7 @@ diffusion/diffusions.C
|
||||
infinitelyFastChemistry/infinitelyFastChemistrys.C
|
||||
|
||||
PaSR/PaSRs.C
|
||||
EDC/EDCs.C
|
||||
|
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eddyDissipationDiffusionModel/eddyDissipationDiffusionModels.C
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Reference in New Issue
Block a user