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thermophysicalModels/specie/transport: Added WLF transport model
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Description
    Transport package using the Williams-Landel-Ferry model.

    Templated into a given thermodynamics package (needed for thermal
    conductivity).

    Dynamic viscosity [kg/m.s]
    \f[
        \mu = \mu_0 \exp \left(\frac{-C_1 ( T - T_r )}{C_2 + T - T_r}\right)
    \f]

    References:
    \verbatim
        Williams, M. L., Landel, R. F., & Ferry, J. D. (1955).
        The temperature dependence of relaxation mechanisms
        in amorphous polymers and other glass-forming liquids.
        Journal of the American Chemical society, 77(14), 3701-3707.
    \endverbatim
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Henry Weller committed Oct 4, 2018
1 parent a752083 commit 7977181
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13 changes: 13 additions & 0 deletions src/thermophysicalModels/basic/rhoThermo/rhoThermos.C
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Expand Up @@ -43,6 +43,7 @@ License

#include "constTransport.H"
#include "sutherlandTransport.H"
#include "WLFTransport.H"

#include "icoPolynomial.H"
#include "hPolynomialThermo.H"
Expand Down Expand Up @@ -408,6 +409,18 @@ makeThermos
specie
);

makeThermos
(
rhoThermo,
heRhoThermo,
pureMixture,
WLFTransport,
sensibleInternalEnergy,
hConstThermo,
rhoConst,
specie
);


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

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92 changes: 92 additions & 0 deletions src/thermophysicalModels/specie/transport/WLF/WLFTransport.C
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@@ -0,0 +1,92 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2018 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 "WLFTransport.H"
#include "IOstreams.H"

// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //

template<class Thermo>
Foam::scalar Foam::WLFTransport<Thermo>::readCoeff
(
const word& coeffName,
const dictionary& dict
)
{
return readScalar(dict.subDict("transport").lookup(coeffName));
}


// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //

template<class Thermo>
Foam::WLFTransport<Thermo>::WLFTransport(const dictionary& dict)
:
Thermo(dict),
mu0_(readCoeff("mu0", dict)),
Tr_(readCoeff("Tr", dict)),
C1_(readCoeff("C1", dict)),
C2_(readCoeff("C2", dict)),
rPr_(1.0/readScalar(dict.subDict("transport").lookup("Pr")))
{}


// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //

template<class Thermo>
void Foam::WLFTransport<Thermo>::write(Ostream& os) const
{
os << this->specie::name() << endl
<< token::BEGIN_BLOCK << incrIndent << nl;

Thermo::write(os);

dictionary dict("transport");
dict.add("mu0", mu0_);
dict.add("Tr", Tr_);
dict.add("C1", C1_);
dict.add("C2", C2_);
dict.add("Pr", 1.0/rPr_);

os << indent << dict.dictName() << dict
<< decrIndent << token::END_BLOCK << nl;
}


// * * * * * * * * * * * * * * * IOstream Operators * * * * * * * * * * * * //

template<class Thermo>
Foam::Ostream& Foam::operator<<
(
Ostream& os,
const WLFTransport<Thermo>& wlft
)
{
wlft.write(os);
return os;
}


// ************************************************************************* //
210 changes: 210 additions & 0 deletions src/thermophysicalModels/specie/transport/WLF/WLFTransport.H
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@@ -0,0 +1,210 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2018 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::WLFTransport
Description
Transport package using the Williams-Landel-Ferry model.
Templated into a given thermodynamics package (needed for thermal
conductivity).
Dynamic viscosity [kg/m.s]
\f[
\mu = \mu_0 \exp \left(\frac{-C_1 ( T - T_r )}{C_2 + T - T_r}\right)
\f]
References:
\verbatim
Williams, M. L., Landel, R. F., & Ferry, J. D. (1955).
The temperature dependence of relaxation mechanisms
in amorphous polymers and other glass-forming liquids.
Journal of the American Chemical society, 77(14), 3701-3707.
\endverbatim
SourceFiles
WLFTransportI.H
WLFTransport.C
\*---------------------------------------------------------------------------*/

#ifndef WLFTransport_H
#define WLFTransport_H

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

// Forward declaration of friend functions and operators

template<class Thermo> class WLFTransport;

template<class Thermo>
inline WLFTransport<Thermo> operator+
(
const WLFTransport<Thermo>&,
const WLFTransport<Thermo>&
);

template<class Thermo>
inline WLFTransport<Thermo> operator*
(
const scalar,
const WLFTransport<Thermo>&
);

template<class Thermo>
Ostream& operator<<
(
Ostream&,
const WLFTransport<Thermo>&
);


/*---------------------------------------------------------------------------*\
Class WLFTransport Declaration
\*---------------------------------------------------------------------------*/

template<class Thermo>
class WLFTransport
:
public Thermo
{
// Private data

//- Dynamic viscosity at the reference temperature [Pa.s]
scalar mu0_;

//- Reference temperature [T]
scalar Tr_;

//- WLF coefficient 1 []
scalar C1_;

//- WLF coefficient 2 [T]
scalar C2_;

//- Reciprocal Prandtl Number []
scalar rPr_;


// Private Member Functions

//- Read coefficient from dictionary
scalar readCoeff(const word& coeffName, const dictionary& dict);


public:

// Constructors

//- Construct as named copy
inline WLFTransport(const word&, const WLFTransport&);

//- Construct from dictionary
WLFTransport(const dictionary& dict);

//- Construct and return a clone
inline autoPtr<WLFTransport> clone() const;

// Selector from dictionary
inline static autoPtr<WLFTransport> New(const dictionary& dict);


// Member functions

//- Return the instantiated type name
static word typeName()
{
return "WLF<" + Thermo::typeName() + '>';
}

//- Dynamic viscosity [kg/ms]
inline scalar mu(const scalar p, const scalar T) const;

//- Thermal conductivity [W/mK]
inline scalar kappa(const scalar p, const scalar T) const;

//- Thermal diffusivity of enthalpy [kg/ms]
inline scalar alphah(const scalar p, const scalar T) const;

// Species diffusivity
// inline scalar D(const scalar p, const scalar T) const;

//- Write to Ostream
void write(Ostream& os) const;


// Member operators

inline void operator=(const WLFTransport&);

inline void operator+=(const WLFTransport&);

inline void operator*=(const scalar);


// Friend operators

friend WLFTransport operator+ <Thermo>
(
const WLFTransport&,
const WLFTransport&
);

friend WLFTransport operator* <Thermo>
(
const scalar,
const WLFTransport&
);


// Ostream Operator

friend Ostream& operator<< <Thermo>
(
Ostream&,
const WLFTransport&
);
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#include "WLFTransportI.H"

#ifdef NoRepository
#include "WLFTransport.C"
#endif

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //

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