opm-simulators/opm/core/simulator/WellState.hpp

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/*
Copyright 2012 SINTEF ICT, Applied Mathematics.
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 3 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/>.
*/
#ifndef OPM_WELLSTATE_HEADER_INCLUDED
#define OPM_WELLSTATE_HEADER_INCLUDED
#include <opm/core/wells.h>
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#include <vector>
namespace Opm
{
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/// The state of a set of wells.
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class WellState
{
public:
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/// Allocate and initialize if wells is non-null.
/// Also tries to give useful initial values to the bhp() and
/// wellRates() fields, depending on controls. The
/// perfRates() field is filled with zero, and perfPress()
/// with -1e100.
template <class State>
void init(const Wells* wells, const State& state)
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{
if (wells) {
const int nw = wells->number_of_wells;
const int np = wells->number_of_phases;
bhp_.resize(nw);
wellrates_.resize(nw * np, 0.0);
for (int w = 0; w < nw; ++w) {
const WellControls* ctrl = wells->ctrls[w];
// Initialize bhp to be target pressure if
// bhp-controlled well, otherwise set to a little
// above or below (depending on if the well is an
// injector or producer) pressure in first perforation
// cell.
if ((ctrl->current < 0) || // SHUT
(ctrl->type[ctrl->current] != BHP)) {
const int first_cell = wells->well_cells[wells->well_connpos[w]];
const double safety_factor = (wells->type[w] == INJECTOR) ? 1.01 : 0.99;
bhp_[w] = safety_factor*state.pressure()[first_cell];
} else {
bhp_[w] = ctrl->target[ctrl->current];
}
// Initialize well rates to match controls if type is SURFACE_RATE
if ((ctrl->current >= 0) || // open well
(ctrl->type[ctrl->current] != SURFACE_RATE)) {
const double rate_target = ctrl->target[ctrl->current];
for (int p = 0; p < np; ++p) {
const double phase_distr = ctrl->distr[np * ctrl->current + p];
wellrates_[np*w + p] = rate_target * phase_distr;
}
}
}
// The perforation rates and perforation pressures are
// not expected to be consistent with bhp_ and wellrates_
// after init().
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perfrates_.resize(wells->well_connpos[nw], 0.0);
perfpress_.resize(wells->well_connpos[nw], -1e100);
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}
}
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/// One bhp pressure per well.
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std::vector<double>& bhp() { return bhp_; }
const std::vector<double>& bhp() const { return bhp_; }
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/// One rate per well and phase.
std::vector<double>& wellRates() { return wellrates_; }
const std::vector<double>& wellRates() const { return wellrates_; }
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/// One rate per well connection.
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std::vector<double>& perfRates() { return perfrates_; }
const std::vector<double>& perfRates() const { return perfrates_; }
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/// One pressure per well connection.
std::vector<double>& perfPress() { return perfpress_; }
const std::vector<double>& perfPress() const { return perfpress_; }
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private:
std::vector<double> bhp_;
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std::vector<double> wellrates_;
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std::vector<double> perfrates_;
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std::vector<double> perfpress_;
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};
} // namespace Opm
#endif // OPM_WELLSTATE_HEADER_INCLUDED