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>
#include <opm/core/well_controls.h>
#include <opm/output/Wells.hpp>
#include <array>
#include <map>
#include <memory>
#include <string>
#include <vector>
#include <cassert>
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#include <cstddef>
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namespace Opm
{
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class PhaseUsage;
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/// The state of a set of wells.
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class WellState
{
public:
typedef std::array< int, 3 > mapentry_t;
typedef std::map< std::string, mapentry_t > WellMapType;
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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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{
// clear old name mapping
wellMap_.clear();
wells_.reset( clone_wells( wells ) );
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if (wells) {
const int nw = wells->number_of_wells;
const int np = wells->number_of_phases;
bhp_.resize(nw);
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thp_.resize(nw);
temperature_.resize(nw, 273.15 + 20); // standard temperature for now
wellrates_.resize(nw * np, 0.0);
for (int w = 0; w < nw; ++w) {
assert((wells->type[w] == INJECTOR) || (wells->type[w] == PRODUCER));
const WellControls* ctrl = wells->ctrls[w];
// setup wellname -> well index mapping
{
assert( wells->name[ w ] );
std::string name( wells->name[ w ] );
assert( name.size() > 0 );
mapentry_t& wellMapEntry = wellMap_[name];
wellMapEntry[ 0 ] = w;
wellMapEntry[ 1 ] = wells->well_connpos[w];
// also store the number of perforations in this well
const int num_perf_this_well = wells->well_connpos[w + 1] - wells->well_connpos[w];
wellMapEntry[ 2 ] = num_perf_this_well;
}
if (well_controls_well_is_stopped(ctrl)) {
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// Stopped well:
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// 1. Rates: assign zero well rates.
for (int p = 0; p < np; ++p) {
wellrates_[np*w + p] = 0.0;
}
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// 2. Bhp: assign bhp equal to bhp control, if
// applicable, otherwise assign equal to
// first perforation cell pressure.
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if (well_controls_get_current_type(ctrl) == BHP) {
bhp_[w] = well_controls_get_current_target( ctrl );
} else {
const int first_cell = wells->well_cells[wells->well_connpos[w]];
bhp_[w] = state.pressure()[first_cell];
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}
// 3. Thp: assign thp equal to thp control, if applicable,
// otherwise assign equal to bhp value.
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if (well_controls_get_current_type(ctrl) == THP) {
thp_[w] = well_controls_get_current_target( ctrl );
} else {
thp_[w] = bhp_[w];
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}
} else {
// Open well:
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// 1. Rates: initialize well rates to match controls
// if type is SURFACE_RATE. Otherwise, we
// cannot set the correct value here, so we
// assign a small rate with the correct
// sign so that any logic depending on that
// sign will work as expected.
if (well_controls_get_current_type(ctrl) == SURFACE_RATE) {
const double rate_target = well_controls_get_current_target(ctrl);
const double * distr = well_controls_get_current_distr( ctrl );
for (int p = 0; p < np; ++p) {
wellrates_[np*w + p] = rate_target * distr[p];
}
} else {
const double small_rate = 1e-14;
const double sign = (wells->type[w] == INJECTOR) ? 1.0 : -1.0;
for (int p = 0; p < np; ++p) {
wellrates_[np*w + p] = small_rate * sign;
}
}
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// 2. Bhp: initialize bhp to be target pressure if
// bhp-controlled well, otherwise set to a
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// little above or below (depending on if
// the well is an injector or producer)
// pressure in first perforation cell.
if (well_controls_get_current_type(ctrl) == BHP) {
bhp_[w] = well_controls_get_current_target( ctrl );
} else {
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];
}
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// 3. Thp: assign thp equal to thp control, if applicable,
// otherwise assign equal to bhp value.
if (well_controls_get_current_type(ctrl) == THP) {
thp_[w] = well_controls_get_current_target( ctrl );
} else {
thp_[w] = bhp_[w];
}
}
}
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// 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 thp pressure per well.
std::vector<double>& thp() { return thp_; }
const std::vector<double>& thp() const { return thp_; }
/// One temperature per well.
std::vector<double>& temperature() { return temperature_; }
const std::vector<double>& temperature() const { return temperature_; }
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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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size_t getRestartBhpOffset() const {
return 0;
}
size_t getRestartPerfPressOffset() const {
return bhp_.size();
}
size_t getRestartPerfRatesOffset() const {
return getRestartPerfPressOffset() + perfpress_.size();
}
size_t getRestartTemperatureOffset() const {
return getRestartPerfRatesOffset() + perfrates_.size();
}
size_t getRestartWellRatesOffset() const {
return getRestartTemperatureOffset() + temperature_.size();
}
const WellMapType& wellMap() const { return wellMap_; }
WellMapType& wellMap() { return wellMap_; }
/// The number of wells present.
int numWells() const
{
return bhp().size();
}
/// The number of phases present.
int numPhases() const
{
return wellRates().size() / numWells();
}
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virtual data::Wells report(const PhaseUsage&) const
{
return { { /* WellState offers no completion data, so that has to be added later */ },
this->bhp(),
this->temperature(),
this->wellRates(),
this->perfPress(),
this->perfRates() };
}
virtual ~WellState() {}
WellState() = default;
WellState( const WellState& rhs ) :
bhp_( rhs.bhp_ ),
thp_( rhs.thp_ ),
temperature_( rhs.temperature_ ),
wellrates_( rhs.wellrates_ ),
perfrates_( rhs.perfrates_ ),
perfpress_( rhs.perfpress_ ),
wellMap_( rhs.wellMap_ ),
wells_( clone_wells( rhs.wells_.get() ) )
{}
WellState& operator=( const WellState& rhs ) {
this->bhp_ = rhs.bhp_;
this->thp_ = rhs.thp_;
this->temperature_ = rhs.temperature_;
this->wellrates_ = rhs.wellrates_;
this->perfrates_ = rhs.perfrates_;
this->perfpress_ = rhs.perfpress_;
this->wellMap_ = rhs.wellMap_;
this->wells_.reset( clone_wells( rhs.wells_.get() ) );
return *this;
}
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private:
std::vector<double> bhp_;
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std::vector<double> thp_;
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_;
WellMapType wellMap_;
protected:
struct wdel {
void operator()( Wells* w ) { destroy_wells( w ); }
};
std::unique_ptr< Wells, wdel > wells_;
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};
} // namespace Opm
#endif // OPM_WELLSTATE_HEADER_INCLUDED