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black-oil fluid system: introduce methods to convert Rs and Rv to their respective mass and mole fractions

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going from Rs/Rv to the mole fractions is intentionally a bit clumsy
because it is relatively expensive computationally.
This commit is contained in:
Andreas Lauser
2016-01-04 15:31:28 +01:00
parent 5bf8cba955
commit 862f808e74
2 changed files with 70 additions and 57 deletions
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112
opm/material/fluidsystems/BlackOilFluidSystem.hpp
View File

@@ -554,41 +554,29 @@ public:
{ return gasPvt_->saturatedOilVaporizationFactor(regionIdx, temperature, pressure); }
/*!
* \brief Returns the saturation pressure of the oil phase [Pa] depending on its mass
* fraction of the gas component
*
* \param Rs The surface volume of gas component dissolved in what will yield one cubic meter of oil at the surface [-]
* \brief Convert the mass fraction of the gas component in the oil phase to the
* corresponding gas dissolution factor.
*/
template <class LhsEval>
static LhsEval oilSaturationPressure(const LhsEval& temperature,
const LhsEval& Rs,
unsigned regionIdx)
{ return oilPvt_->saturationPressure(regionIdx, temperature, Rs); }
/*!
* \brief The maximum mass fraction of the gas component in the oil phase.
*/
template <class LhsEval>
static LhsEval saturatedOilGasMassFraction(const LhsEval& temperature,
const LhsEval& pressure,
unsigned regionIdx)
static LhsEval convertXoGToRs(const LhsEval& XoG, unsigned regionIdx)
{
const auto& Rs = oilPvt_->saturatedGasDissolutionFactor(regionIdx, temperature, pressure);
return convertRsToXoG(Rs, regionIdx);
Scalar rho_oRef = referenceDensity_[regionIdx][oilPhaseIdx];
Scalar rho_gRef = referenceDensity_[regionIdx][gasPhaseIdx];
return XoG/(1.0 - XoG)*(rho_oRef/rho_gRef);
}
/*!
* \brief Convert an oil vaporization factor to the corresponding mass fraction
* of the oil component in the gas phase.
* \brief Convert the mass fraction of the oil component in the gas phase to the
* corresponding oil vaporization factor.
*/
template <class LhsEval>
static LhsEval saturatedOilGasMoleFraction(const LhsEval& temperature,
const LhsEval& pressure,
unsigned regionIdx)
static LhsEval convertXgOToRv(const LhsEval& XgO, unsigned regionIdx)
{
const auto& Rs = oilPvt_->saturatedGasDissolutionFactor(regionIdx, temperature, pressure);
const auto& XoG = convertRsToXoG(Rs, regionIdx);
return convertXoGToxoG(XoG, regionIdx);
Scalar rho_oRef = referenceDensity_[regionIdx][oilPhaseIdx];
Scalar rho_gRef = referenceDensity_[regionIdx][gasPhaseIdx];
return XgO/(1.0 - XgO)*(rho_gRef/rho_oRef);
}
/*!
@@ -625,10 +613,10 @@ public:
template <class LhsEval>
static LhsEval convertXoGToxoG(const LhsEval& XoG, unsigned regionIdx)
{
Scalar MG = molarMass(gasPhaseIdx, regionIdx);
Scalar MO = molarMass(oilPhaseIdx, regionIdx);
Scalar MO = molarMass_[regionIdx][oilCompIdx];
Scalar MG = molarMass_[regionIdx][gasCompIdx];
return XoG/(MO + XoG*(MO - MG));
return XoG*MO / (MG*(1 - XoG) + XoG*MO);
}
/*!
@@ -637,10 +625,48 @@ public:
template <class LhsEval>
static LhsEval convertXgOToxgO(const LhsEval& XgO, unsigned regionIdx)
{
Scalar MG = molarMass(gasPhaseIdx, regionIdx);
Scalar MO = molarMass(oilPhaseIdx, regionIdx);
Scalar MO = molarMass_[regionIdx][oilCompIdx];
Scalar MG = molarMass_[regionIdx][gasCompIdx];
return XgO/(MG + XgO*(MG - MO));
return XgO*MG / (MO*(1 - XgO) + XgO*MG);
}
/*!
* \brief Returns the saturation pressure of the oil phase [Pa] depending on its mass
* fraction of the gas component
*
* \param Rs The surface volume of gas component dissolved in what will yield one cubic meter of oil at the surface [-]
*/
template <class LhsEval>
static LhsEval oilSaturationPressure(const LhsEval& temperature,
const LhsEval& Rs,
unsigned regionIdx)
{ return oilPvt_->saturationPressure(regionIdx, temperature, Rs); }
/*!
* \brief The maximum mass fraction of the gas component in the oil phase.
*/
template <class LhsEval>
static LhsEval saturatedOilGasMassFraction(const LhsEval& temperature,
const LhsEval& pressure,
unsigned regionIdx)
{
const auto& Rs = oilPvt_->saturatedGasDissolutionFactor(regionIdx, temperature, pressure);
return convertRsToXoG(Rs, regionIdx);
}
/*!
* \brief Convert an oil vaporization factor to the corresponding mass fraction
* of the oil component in the gas phase.
*/
template <class LhsEval>
static LhsEval saturatedOilGasMoleFraction(const LhsEval& temperature,
const LhsEval& pressure,
unsigned regionIdx)
{
const auto& Rs = oilPvt_->saturatedGasDissolutionFactor(regionIdx, temperature, pressure);
const auto& XoG = convertRsToXoG(Rs, regionIdx);
return convertXoGToxoG(XoG, regionIdx);
}
/*!
@@ -748,28 +774,6 @@ public:
unsigned regionIdx)
{ return waterPvt_->density(regionIdx, temperature, pressure); }
/*!
* \brief Convert the mass fraction of the gas component in the oil phase to the
* corresponding gas dissolution factor.
*/
template <class LhsEval>
static LhsEval convertXoGToRs(const LhsEval& XoG, unsigned regionIdx)
{
return XoG/(1 - XoG)
*(referenceDensity(oilPhaseIdx, regionIdx)/referenceDensity(gasPhaseIdx, regionIdx));
}
/*!
* \brief Convert the mass fraction of the oil component in the gas phase to the
* corresponding oil vaporization factor.
*/
template <class LhsEval>
static LhsEval convertXgOToRv(const LhsEval& XgO, unsigned regionIdx)
{
return XgO/(1 - XgO)
*(referenceDensity(gasPhaseIdx, regionIdx)/referenceDensity(oilPhaseIdx, regionIdx));
}
private:
static void resizeArrays_(size_t numRegions)
{

15
tests/test_fluidsystems.cpp
View File

@@ -93,10 +93,15 @@ void ensureBlackoilApi()
Evaluation XoG;
OPM_UNUSED Evaluation dummy;
// some additional typedefs
typedef typename FluidSystem::OilPvt OilPvt;
typedef typename FluidSystem::GasPvt GasPvt;
typedef typename FluidSystem::WaterPvt WaterPvt;
// check the non-parser initialization
std::shared_ptr<typename FluidSystem::GasPvt> gasPvt;
std::shared_ptr<typename FluidSystem::OilPvt> oilPvt;
std::shared_ptr<typename FluidSystem::WaterPvt> waterPvt;
std::shared_ptr<OilPvt> oilPvt;
std::shared_ptr<GasPvt> gasPvt;
std::shared_ptr<WaterPvt> waterPvt;
unsigned numPvtRegions = 2;
FluidSystem::initBegin(numPvtRegions);
@@ -138,6 +143,10 @@ void ensureBlackoilApi()
dummy = FluidSystem::waterDensity(temperature, pressure, /*regionIdx=*/0);
dummy = FluidSystem::convertXoGToRs(XoG, /*regionIdx=*/0);
dummy = FluidSystem::convertXgOToRv(XgO, /*regionIdx=*/0);
dummy = FluidSystem::convertXoGToxoG(XoG, /*regionIdx=*/0);
dummy = FluidSystem::convertXgOToxgO(XgO, /*regionIdx=*/0);
dummy = FluidSystem::convertRsToXoG(Rs, /*regionIdx=*/0);
dummy = FluidSystem::convertRvToXgO(Rv, /*regionIdx=*/0);
}
}