LhsEval getRv_(typename std::enable_if<!HasMember_Rv<FluidState>::value, const FluidState&>::type fluidState,
unsigned regionIdx)
{
typedef Opm::MathToolbox<typename FluidState::Scalar> FsToolbox;
const auto& XgO =
FsToolbox::template toLhs<LhsEval>(fluidState.massFraction(FluidSystem::gasPhaseIdx,
FluidSystem::oilCompIdx));
return FluidSystem::convertXgOToRv(XgO, regionIdx);
}
LhsEval getInvB_(typename std::enable_if<!HasMember_invB<FluidState>::value,
const FluidState&>::type fluidState,
unsigned phaseIdx,
unsigned pvtRegionIdx)
{
const auto& rho = fluidState.density(phaseIdx);
const auto& Xsolvent =
fluidState.massFraction(phaseIdx, FluidSystem::solventComponentIndex(phaseIdx));
return
Opm::decay<LhsEval>(rho)
*Opm::decay<LhsEval>(Xsolvent)
/FluidSystem::referenceDensity(phaseIdx, pvtRegionIdx);
}