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EclDefaultMaterial: use inconsistent saturations for the hysteresis update

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with this, I got slightly better performance than the opm-core master
version if flow is tasked on simulating the full Norne deck. Be aware
that from the physical POV, this is wrong.
This commit is contained in:
Andreas Lauser 2015-08-13 21:18:07 +02:00
parent 83de8aceb1
commit 893538c9f3
1 changed files with 12 additions and 9 deletions
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21
opm/material/fluidmatrixinteractions/EclDefaultMaterial.hpp
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@ -327,18 +327,21 @@ public:
{
typedef MathToolbox<typename FluidState::Scalar> FsToolbox;
Scalar Swco = params.Swl();
Scalar Sw = FsToolbox::value(fluidState.saturation(waterPhaseIdx));
Scalar So = FsToolbox::value(fluidState.saturation(oilPhaseIdx));
Scalar Sg = FsToolbox::value(fluidState.saturation(gasPhaseIdx));
Sw = std::min(1.0, std::max(Swco, Sw));
Sg = std::min(1.0, std::max(0.0, Sg));
Scalar Sw_ow = Sg + Sw;
Scalar So_go = 1 - Sw_ow + Swco;
params.oilWaterParams().update(/*pcSw=*/Sw, /*krwSw=*/1 - Sg, /*krnSw=*/Sw_ow);
params.gasOilParams().update(/*pcSw=*/1 - Sg, /*krwSw=*/So_go, /*krnSw=*/1 - Sg);
// FIXME: the saturations which are passed to update the hysteresis curves are
// inconsistent with the ones used to calculate the relative permabilities. We do
// it like this anyway because (a) the saturation functions of opm-core do it
// this way (b) the simulations seem to converge better (which is not too much
// surprising actually, because the time step does not start on a kink in the
// solution) and (c) the Eclipse 100 simulator may do the same.
//
// Though be aware that from a physical perspective this is definitively
// incorrect!
params.oilWaterParams().update(/*pcSw=*/1 - So, /*krwSw=*/1 - So, /*krn_Sw=*/1 - So);
params.gasOilParams().update(/*pcSw=*/1 - Sg, /*krwSw=*/1 - Sg, /*krn_Sw=*/1 - Sg);
}
};
} // namespace Opm