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adding a fix for the zero rate control for StandardWell

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to avoid under-determined problem.
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Kai Bao committed 2018-05-28 16:05:02 +02:00
1 parent efbac8a628
commit ce849fe18e
1 file changed
+15 -7
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opm/autodiff/StandardWell_impl.hpp
+15 -7
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@@ -668,14 +668,22 @@ namespace Opm
assert(number_phases_under_control == 1); // only handles single phase injection now
control_eq = getGTotal() - target_rate;
} else if (well_type_ == PRODUCER) {
EvalWell rate_for_control(0.);
const EvalWell& g_total = getGTotal();
for (int phase = 0; phase < number_of_phases_; ++phase) {
if (distr[phase] > 0.) {
rate_for_control += g_total * wellVolumeFractionScaled(flowPhaseToEbosCompIdx(phase));
}
if (target_rate != 0.) {
EvalWell rate_for_control(0.);
const EvalWell& g_total = getGTotal();
for (int phase = 0; phase < number_of_phases_; ++phase) {
if (distr[phase] > 0.) {
rate_for_control += g_total * wellVolumeFractionScaled(flowPhaseToEbosCompIdx(phase));
}
}
control_eq = rate_for_control - target_rate;
} else {
// there is some special treatment for the zero rate control well
// 1. if the well can produce the specified phase, it means the well should not produce any fluid
// 2. if the well can not produce the specified phase, it cause a under-determined problem, we
// basically assume the well not producing any fluid as a solution
control_eq = getGTotal() - target_rate;
}
control_eq = rate_for_control - target_rate;
}
break;
}