FluidStateEnthalpyModules.hpp

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// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
// vi: set et ts=4 sw=4 sts=4:
/*
  This file is part of the Open Porous Media project (OPM).
 
  OPM 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 2 of the License, or
  (at your option) any later version.
 
  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
 
  Consult the COPYING file in the top-level source directory of this
  module for the precise wording of the license and the list of
  copyright holders.
*/
#ifndef OPM_FLUID_STATE_ENTHALPY_MODULES_HPP
#define OPM_FLUID_STATE_ENTHALPY_MODULES_HPP
 
#include <opm/material/common/MathToolbox.hpp>
#include <opm/material/common/Valgrind.hpp>
 
#include <array>
 
namespace Opm {
template <class ValueType,
          unsigned numPhases,
          class Implementation>
class FluidStateExplicitEnthalpyModule
{
public:
    FluidStateExplicitEnthalpyModule()
    { Valgrind::SetUndefined(enthalpy_); }

    const ValueType& enthalpy(unsigned phaseIdx) const
    { return enthalpy_[phaseIdx]; }

    ValueType internalEnergy(unsigned phaseIdx) const
    { return enthalpy_[phaseIdx] - asImp_().pressure(phaseIdx)/asImp_().density(phaseIdx); }

    void setEnthalpy(unsigned phaseIdx, const ValueType& value)
    { enthalpy_[phaseIdx] = value; }

    template <class FluidState>
    void assign(const FluidState& fs)
    {
        for (unsigned phaseIdx = 0; phaseIdx < numPhases; ++phaseIdx) {
            enthalpy_[phaseIdx] = decay<ValueType>(fs.enthalpy(phaseIdx));
        }
    }

    void checkDefined() const
    {
        Valgrind::CheckDefined(enthalpy_);
    }
 
protected:
    const Implementation& asImp_() const
    { return *static_cast<const Implementation*>(this); }
 
    std::array<ValueType, numPhases> enthalpy_{};
};

template <class ValueT,
          unsigned numPhases,
          class Implementation>
class FluidStateNullEnthalpyModule
{
public:
    FluidStateNullEnthalpyModule()
    { }

    const ValueT& internalEnergy(unsigned /* phaseIdx */) const
    {
        static ValueT tmp = 0;
        Valgrind::SetUndefined(tmp);
        return tmp;
    }

    const ValueT& enthalpy(unsigned /* phaseIdx */) const
    {
        static ValueT tmp = 0;
        Valgrind::SetUndefined(tmp);
        return tmp;
    }

    template <class FluidState>
    void assign(const FluidState& /* fs */)
    { }

    void checkDefined() const
    { }
};
 
} // namespace Opm
 
#endif