hPolynomialThermo.H

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-------------------------------------------------------------------------------
    Copyright (C) 2011-2017 OpenFOAM Foundation
    Copyright (C) 2020-2021 OpenCFD Ltd.
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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::hPolynomialThermo
 
Group
    grpSpecieThermo
 
Description
    Thermodynamics package templated on the equation of state, using polynomial
    functions for \c cp, \c h and \c s.
 
    Polynomials for \c h and \c s derived from \c cp.
 
Usage
 
    \table
        Property     | Description
        Hf           | Heat of formation
        Sf           | Standard entropy
        CpCoeffs<8>  | Specific heat at constant pressure polynomial coeffs
    \endtable
 
    Example of the specification of the thermodynamic properties:
    \verbatim
    thermodynamics
    {
        Hf              0;
        Sf              0;
        CpCoeffs<8>     ( 1000 -0.05 0.003 0 0 0 0 0 );
    }
    \endverbatim
 
    The polynomial expression is evaluated as so:
 
        \f[
            Cp = 1000 - 0.05 T + 0.003 T^2
        \f]
 
Note
    - Heat of formation is inputted in [J/kg], but internally uses [J/kmol]
    - Standard entropy is inputted in [J/kg/K], but internally uses [J/kmol/K]
    - Specific heat at constant pressure polynomial coefficients evaluate to an
      expression in [J/(kg.K)].
 
SourceFiles
    hPolynomialThermoI.H
    hPolynomialThermo.C
 
See also
    Foam::Polynomial
 
\*---------------------------------------------------------------------------*/
 
#ifndef hPolynomialThermo_H
#define hPolynomialThermo_H
 
#include "scalar.H"
#include "Polynomial.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward Declarations
 
template<class EquationOfState, int PolySize>
class hPolynomialThermo;
 
template<class EquationOfState, int PolySize>
inline hPolynomialThermo<EquationOfState, PolySize> operator+
(
    const hPolynomialThermo<EquationOfState, PolySize>&,
    const hPolynomialThermo<EquationOfState, PolySize>&
);
 
template<class EquationOfState, int PolySize>
inline hPolynomialThermo<EquationOfState, PolySize> operator*
(
    const scalar,
    const hPolynomialThermo<EquationOfState, PolySize>&
);
 
template<class EquationOfState, int PolySize>
inline hPolynomialThermo<EquationOfState, PolySize> operator==
(
    const hPolynomialThermo<EquationOfState, PolySize>&,
    const hPolynomialThermo<EquationOfState, PolySize>&
);
 
template<class EquationOfState, int PolySize>
Ostream& operator<<
(
    Ostream&,
    const hPolynomialThermo<EquationOfState, PolySize>&
);
 
 
/*---------------------------------------------------------------------------*\
                      Class hPolynomialThermo Declaration
\*---------------------------------------------------------------------------*/
 
template<class EquationOfState, int PolySize=8>
class hPolynomialThermo
:
    public EquationOfState
{
    // Private Data
 
        //- Heat of formation
        scalar Hf_;
 
        //- Standard entropy
        scalar Sf_;
 
        //- Specific heat at constant pressure polynomial coeffs
        Polynomial<PolySize> CpCoeffs_;
 
        //- Reference temperature
        scalar Tref_;
 
        //- Reference enthalphy
        scalar Href_;
 
        //- Reference entropy
        scalar Sref_;
 
        //- Reference pressure
        scalar Pref_;
 
        //- Enthalpy polynomial coeffs - derived from cp [J/kg]
        //  NOTE: relative to Tstd
        typename Polynomial<PolySize>::intPolyType hCoeffs_;
 
        //- Entropy - derived from Cp [J/(kg.K)] - relative to Tstd
        Polynomial<PolySize> sCoeffs_;
 
 
    // Private Member Functions
 
        //- Coeffs name. Eg, "CpCoeffs<10>"
        inline static word coeffsName(const char* name)
        {
            return word(name + ("Coeffs<" + std::to_string(PolySize) + '>'));
        }
 
        //- Construct from components
        inline hPolynomialThermo
        (
            const EquationOfState& pt,
            const scalar Hf,
            const scalar Sf,
            const Polynomial<PolySize>& CpCoeffs,
            const typename Polynomial<PolySize>::intPolyType& hCoeffs,
            const Polynomial<PolySize>& sCoeffs
        );
 
 
public:
 
    // Generated Methods: copy construct, copy assignment
 
 
    // Constructors
 
        //- Construct from dictionary
        hPolynomialThermo(const dictionary& dict);
 
        //- Construct as a named copy
        inline hPolynomialThermo(const word&, const hPolynomialThermo&);
 
 
    // Member Functions
 
        //- Return the instantiated type name
        static word typeName()
        {
            return "hPolynomial<" + EquationOfState::typeName() + '>';
        }
 
        //- Limit temperature to be within the range
        inline scalar limit(const scalar) const;
 
 
        // Fundamental properties
 
            //- Heat capacity at constant pressure [J/(kg K)]
            inline scalar Cp(const scalar p, const scalar T) const;
 
            //- Absolute Enthalpy [J/kg]
            inline scalar Ha(const scalar p, const scalar T) const;
 
            //- Sensible enthalpy [J/kg]
            inline scalar Hs(const scalar p, const scalar T) const;
 
            //- Chemical enthalpy [J/kg]
            inline scalar Hc() const;
 
            //- Entropy [J/(kg K)]
            inline scalar S(const scalar p, const scalar T) const;
 
            //- Gibbs free energy of the mixture in the standard state [J/kg]
            inline scalar Gstd(const scalar T) const;
 
 
            #include "HtoEthermo.H"
 
 
        // Derivative term used for Jacobian
 
 
            //- Temperature derivative of heat capacity at constant pressure
            inline scalar dCpdT(const scalar p, const scalar T) const;
 
 
 
        // IO
 
            //- Write to Ostream
            void write(Ostream& os) const;
 
 
    // Member Operators
 
        inline void operator+=(const hPolynomialThermo&);
        inline void operator*=(const scalar);
 
 
    // Friend Operators
 
        friend hPolynomialThermo operator+ <EquationOfState, PolySize>
        (
            const hPolynomialThermo&,
            const hPolynomialThermo&
        );
 
        friend hPolynomialThermo operator* <EquationOfState, PolySize>
        (
            const scalar,
            const hPolynomialThermo&
        );
 
        friend hPolynomialThermo operator== <EquationOfState, PolySize>
        (
            const hPolynomialThermo&,
            const hPolynomialThermo&
        );
 
 
    // IOstream Operators
 
        friend Ostream& operator<< <EquationOfState, PolySize>
        (
            Ostream&,
            const hPolynomialThermo&
        );
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "hPolynomialThermoI.H"
 
#ifdef NoRepository
    #include "hPolynomialThermo.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //