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https://github.com/OPM/opm-simulators.git
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185 lines
7.6 KiB
C++
185 lines
7.6 KiB
C++
/*
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Copyright 2012 SINTEF ICT, Applied Mathematics.
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This file is part of the Open Porous Media project (OPM).
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OPM is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OPM is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OPM. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OPM_WELLSTATE_HEADER_INCLUDED
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#define OPM_WELLSTATE_HEADER_INCLUDED
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#include <opm/core/wells.h>
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#include <opm/core/well_controls.h>
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#include <vector>
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#include <cassert>
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#include <cstddef>
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namespace Opm
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{
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/// The state of a set of wells.
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class WellState
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{
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public:
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/// Allocate and initialize if wells is non-null.
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/// Also tries to give useful initial values to the bhp() and
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/// wellRates() fields, depending on controls. The
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/// perfRates() field is filled with zero, and perfPress()
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/// with -1e100.
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template <class State>
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void init(const Wells* wells, const State& state)
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{
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if (wells) {
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const int nw = wells->number_of_wells;
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const int np = wells->number_of_phases;
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bhp_.resize(nw);
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thp_.resize(nw);
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temperature_.resize(nw, 273.15 + 20); // standard temperature for now
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wellrates_.resize(nw * np, 0.0);
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for (int w = 0; w < nw; ++w) {
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assert((wells->type[w] == INJECTOR) || (wells->type[w] == PRODUCER));
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const WellControls* ctrl = wells->ctrls[w];
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if (well_controls_well_is_stopped(ctrl)) {
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// Stopped well:
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// 1. Rates: assign zero well rates.
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for (int p = 0; p < np; ++p) {
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wellrates_[np*w + p] = 0.0;
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}
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// 2. Bhp: assign bhp equal to bhp control, if
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// applicable, otherwise assign equal to
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// first perforation cell pressure.
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if (well_controls_get_current_type(ctrl) == BHP) {
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bhp_[w] = well_controls_get_current_target( ctrl );
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} else {
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const int first_cell = wells->well_cells[wells->well_connpos[w]];
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bhp_[w] = state.pressure()[first_cell];
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}
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// 3. Thp: assign thp equal to thp control, if applicable,
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// otherwise assign equal to bhp value.
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if (well_controls_get_current_type(ctrl) == THP) {
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thp_[w] = well_controls_get_current_target( ctrl );
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} else {
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thp_[w] = bhp_[w];
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}
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} else {
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// Open well:
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// 1. Rates: initialize well rates to match controls
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// if type is SURFACE_RATE. Otherwise, we
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// cannot set the correct value here, so we
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// assign a small rate with the correct
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// sign so that any logic depending on that
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// sign will work as expected.
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if (well_controls_get_current_type(ctrl) == SURFACE_RATE) {
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const double rate_target = well_controls_get_current_target(ctrl);
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const double * distr = well_controls_get_current_distr( ctrl );
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for (int p = 0; p < np; ++p) {
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wellrates_[np*w + p] = rate_target * distr[p];
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}
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} else {
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const double small_rate = 1e-14;
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const double sign = (wells->type[w] == INJECTOR) ? 1.0 : -1.0;
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for (int p = 0; p < np; ++p) {
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wellrates_[np*w + p] = small_rate * sign;
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}
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}
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// 2. Bhp: initialize bhp to be target pressure if
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// bhp-controlled well, otherwise set to a
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// little above or below (depending on if
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// the well is an injector or producer)
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// pressure in first perforation cell.
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if (well_controls_get_current_type(ctrl) == BHP) {
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bhp_[w] = well_controls_get_current_target( ctrl );
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} else {
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const int first_cell = wells->well_cells[wells->well_connpos[w]];
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const double safety_factor = (wells->type[w] == INJECTOR) ? 1.01 : 0.99;
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bhp_[w] = safety_factor*state.pressure()[first_cell];
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}
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// 3. Thp: assign thp equal to thp control, if applicable,
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// otherwise assign equal to bhp value.
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if (well_controls_get_current_type(ctrl) == THP) {
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thp_[w] = well_controls_get_current_target( ctrl );
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} else {
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thp_[w] = bhp_[w];
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}
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}
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}
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// The perforation rates and perforation pressures are
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// not expected to be consistent with bhp_ and wellrates_
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// after init().
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perfrates_.resize(wells->well_connpos[nw], 0.0);
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perfpress_.resize(wells->well_connpos[nw], -1e100);
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}
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}
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/// One bhp pressure per well.
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std::vector<double>& bhp() { return bhp_; }
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const std::vector<double>& bhp() const { return bhp_; }
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/// One thp pressure per well.
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std::vector<double>& thp() { return thp_; }
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const std::vector<double>& thp() const { return thp_; }
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/// One temperature per well.
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std::vector<double>& temperature() { return temperature_; }
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const std::vector<double>& temperature() const { return temperature_; }
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/// One rate per well and phase.
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std::vector<double>& wellRates() { return wellrates_; }
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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_; }
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const std::vector<double>& perfRates() const { return perfrates_; }
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/// One pressure per well connection.
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std::vector<double>& perfPress() { return perfpress_; }
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const std::vector<double>& perfPress() const { return perfpress_; }
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size_t getRestartBhpOffset() const {
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return 0;
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}
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size_t getRestartPerfPressOffset() const {
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return bhp_.size();
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}
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size_t getRestartPerfRatesOffset() const {
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return getRestartPerfPressOffset() + perfpress_.size();
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}
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size_t getRestartTemperatureOffset() const {
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return getRestartPerfRatesOffset() + perfrates_.size();
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}
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size_t getRestartWellRatesOffset() const {
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return getRestartTemperatureOffset() + temperature_.size();
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}
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private:
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std::vector<double> bhp_;
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std::vector<double> thp_;
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std::vector<double> temperature_;
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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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};
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} // namespace Opm
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#endif // OPM_WELLSTATE_HEADER_INCLUDED
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