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314 lines
13 KiB
C++
314 lines
13 KiB
C++
/*
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Copyright 2013, 2015 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_BLACKOILMULTISEGMENTMODEL_HEADER_INCLUDED
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#define OPM_BLACKOILMULTISEGMENTMODEL_HEADER_INCLUDED
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#include <opm/core/simulator/BlackoilState.hpp>
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#include <opm/autodiff/BlackoilModelBase.hpp>
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#include <opm/autodiff/BlackoilModelParameters.hpp>
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#include <opm/autodiff/WellStateMultiSegment.hpp>
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#include <opm/autodiff/WellMultiSegment.hpp>
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namespace Opm {
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struct BlackoilMultiSegmentSolutionState : public DefaultBlackoilSolutionState
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{
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explicit BlackoilMultiSegmentSolutionState(const int np)
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: DefaultBlackoilSolutionState(np)
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, segp ( ADB::null())
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, segqs ( ADB::null())
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{
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}
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ADB segp; // the segment pressures
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ADB segqs; // the segment phase rate in surface volume
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};
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/// A model implementation for three-phase black oil with support
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/// for multi-segment wells.
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///
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/// It uses automatic differentiation via the class AutoDiffBlock
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/// to simplify assembly of the jacobian matrix.
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/// \tparam Grid UnstructuredGrid or CpGrid.
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/// \tparam Implementation Provides concrete state types.
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template<class Grid>
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class BlackoilMultiSegmentModel : public BlackoilModelBase<Grid, BlackoilMultiSegmentModel<Grid>>
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{
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public:
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typedef BlackoilModelBase<Grid, BlackoilMultiSegmentModel<Grid> > Base; // base class
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typedef typename Base::ReservoirState ReservoirState;
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typedef typename Base::WellState WellState;
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typedef BlackoilMultiSegmentSolutionState SolutionState;
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friend Base;
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// --------- Public methods ---------
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/// Construct the model. It will retain references to the
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/// arguments of this functions, and they are expected to
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/// remain in scope for the lifetime of the solver.
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/// \param[in] param parameters
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/// \param[in] grid grid data structure
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/// \param[in] fluid fluid properties
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/// \param[in] geo rock properties
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/// \param[in] rock_comp_props if non-null, rock compressibility properties
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/// \param[in] wells well structure
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/// \param[in] vfp_properties Vertical flow performance tables
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/// \param[in] linsolver linear solver
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/// \param[in] eclState eclipse state
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/// \param[in] has_disgas turn on dissolved gas
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/// \param[in] has_vapoil turn on vaporized oil feature
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/// \param[in] terminal_output request output to cout/cerr
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/// \param[in] wells_multisegment a vector of multisegment wells
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BlackoilMultiSegmentModel(const typename Base::ModelParameters& param,
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const Grid& grid ,
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const BlackoilPropsAdInterface& fluid,
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const DerivedGeology& geo ,
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const RockCompressibility* rock_comp_props,
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const Wells* wells,
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const NewtonIterationBlackoilInterface& linsolver,
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Opm::EclipseStateConstPtr eclState,
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const bool has_disgas,
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const bool has_vapoil,
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const bool terminal_output,
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const std::vector<WellMultiSegmentConstPtr>& wells_multisegment);
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/// Called once before each time step.
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/// \param[in] dt time step size
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/// \param[in, out] reservoir_state reservoir state variables
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/// \param[in, out] well_state well state variables
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void prepareStep(const double dt,
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ReservoirState& reservoir_state,
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WellState& well_state);
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/// Assemble the residual and Jacobian of the nonlinear system.
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/// \param[in] reservoir_state reservoir state variables
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/// \param[in, out] well_state well state variables
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/// \param[in] initial_assembly pass true if this is the first call to assemble() in this timestep
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void assemble(const ReservoirState& reservoir_state,
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WellState& well_state,
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const bool initial_assembly);
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using Base::numPhases;
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using Base::numMaterials;
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using Base::materialName;
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protected:
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// --------- Data members ---------
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// For non-segmented wells, it should be the density calculated with AVG or SEG way.
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// while usually SEG way by default.
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using Base::well_perforation_densities_; //Density of each well perforation
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using Base::pvdt_;
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using Base::geo_;
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using Base::active_;
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using Base::rq_;
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using Base::fluid_;
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using Base::terminal_output_;
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using Base::grid_;
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using Base::canph_;
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using Base::residual_;
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using Base::isSg_;
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using Base::isRs_;
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using Base::isRv_;
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using Base::has_disgas_;
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using Base::has_vapoil_;
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using Base::primalVariable_;
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using Base::cells_;
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using Base::param_;
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using Base::linsolver_;
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// Diff to bhp for each well perforation. only for usual wells.
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// For segmented wells, they are zeros.
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using Base::well_perforation_pressure_diffs_;
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// Pressure correction due to the different depth of the perforation
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// and the cell center of the grid block
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// For the non-segmented wells, since the perforation are forced to be
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// at the center of the grid cell, it should be ZERO.
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// It only applies to the mutli-segmented wells.
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V well_perforation_cell_pressure_diffs_;
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// Pressure correction due to the depth differennce between segment depth and perforation depth.
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ADB well_segment_perforation_pressure_diffs_;
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// The depth difference between segment nodes and perforations
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V well_segment_perforation_depth_diffs_;
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// the average of the fluid densities in the grid block
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// which is used to calculate the hydrostatic head correction due to the depth difference of the perforation
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// and the cell center of the grid block
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V well_perforation_cell_densities_;
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// the density of the fluid mixture in the segments
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// which is calculated in an implicit way
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ADB well_segment_densities_;
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// the hydrostatic pressure drop between segment nodes
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// calculated with the above density of fluid mixtures
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// for the top segment, they should always be zero for the moment.
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ADB well_segment_pressures_delta_;
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// the surface volume of components in the segments
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// the initial value at the beginning of the time step
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std::vector<V> segment_comp_surf_volume_initial_;
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// the value within the current iteration.
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std::vector<ADB> segment_comp_surf_volume_current_;
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// the mass flow rate in the segments
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ADB segment_mass_flow_rates_;
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// the viscosity of the fluid mixture in the segments
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// TODO: it is only used to calculate the Reynolds number as we know
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// maybe it is not better just to store the Reynolds number?
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ADB segment_viscosities_;
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const std::vector<WellMultiSegmentConstPtr> wells_multisegment_;
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std::vector<int> top_well_segments_;
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// segment volume by dt (time step)
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// to handle the volume effects of the segment
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V segvdt_;
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// Well operations and data needed.
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struct MultiSegmentWellOps {
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explicit MultiSegmentWellOps(const std::vector<WellMultiSegmentConstPtr>& wells_ms);
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Eigen::SparseMatrix<double> w2p; // well -> perf (scatter)
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Eigen::SparseMatrix<double> p2w; // perf -> well (gather)
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Eigen::SparseMatrix<double> w2s; // well -> segment (scatter)
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Eigen::SparseMatrix<double> s2w; // segment -> well (gather)
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Eigen::SparseMatrix<double> s2p; // segment -> perf (scatter)
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Eigen::SparseMatrix<double> p2s; // perf -> segment (gather)
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Eigen::SparseMatrix<double> s2s_inlets; // segment -> its inlet segments
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Eigen::SparseMatrix<double> s2s_outlet; // segment -> its outlet segment
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Eigen::SparseMatrix<double> topseg2w; // top segment -> well
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AutoDiffMatrix eliminate_topseg; // change the top segment related to be zero
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std::vector<int> well_cells; // the set of perforated cells
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V conn_trans_factors; // connection transmissibility factors
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bool has_multisegment_wells; // flag indicating whether there is any muli-segment well
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};
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MultiSegmentWellOps wops_ms_;
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// return wells object
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// TODO: remove this wells structure
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using Base::wells;
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using Base::updatePrimalVariableFromState;
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using Base::wellsActive;
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using Base::phaseCondition;
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using Base::fluidRvSat;
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using Base::fluidRsSat;
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using Base::fluidDensity;
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using Base::updatePhaseCondFromPrimalVariable;
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using Base::computeGasPressure;
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using Base::dpMaxRel;
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using Base::dsMax;
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using Base::drMaxRel;
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using Base::convergenceReduction;
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using Base::maxResidualAllowed;
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using Base::variableState;
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using Base::asImpl;
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const std::vector<WellMultiSegmentConstPtr>& wellsMultiSegment() const { return wells_multisegment_; }
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void updateWellControls(WellState& xw) const;
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void updateWellState(const V& dwells,
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WellState& well_state);
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void
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variableWellStateInitials(const WellState& xw,
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std::vector<V>& vars0) const;
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void computeWellConnectionPressures(const SolutionState& state,
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const WellState& xw);
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bool
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solveWellEq(const std::vector<ADB>& mob_perfcells,
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const std::vector<ADB>& b_perfcells,
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SolutionState& state,
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WellState& well_state);
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void
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computeWellFlux(const SolutionState& state,
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const std::vector<ADB>& mob_perfcells,
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const std::vector<ADB>& b_perfcells,
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V& aliveWells,
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std::vector<ADB>& cq_s) const;
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void
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updatePerfPhaseRatesAndPressures(const std::vector<ADB>& cq_s,
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const SolutionState& state,
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WellState& xw) const;
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void
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addWellFluxEq(const std::vector<ADB>& cq_s,
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const SolutionState& state);
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void
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addWellControlEq(const SolutionState& state,
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const WellState& xw,
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const V& aliveWells);
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int numWellVars() const;
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void
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makeConstantState(SolutionState& state) const;
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void
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variableStateExtractWellsVars(const std::vector<int>& indices,
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std::vector<ADB>& vars,
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SolutionState& state) const;
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// Calculate the density of the mixture in the segments
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// And the surface volume of the components in the segments by dt
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void
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computeSegmentFluidProperties(const SolutionState& state);
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void
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computeSegmentPressuresDelta(const SolutionState& state);
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};
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/// Providing types by template specialisation of ModelTraits for BlackoilMultiSegmentModel.
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template <class GridT>
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struct ModelTraits< BlackoilMultiSegmentModel<GridT> >
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{
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typedef BlackoilState ReservoirState;
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typedef WellStateMultiSegment WellState;
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typedef BlackoilModelParameters ModelParameters;
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typedef BlackoilMultiSegmentSolutionState SolutionState;
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};
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} // namespace Opm
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#include "BlackoilMultiSegmentModel_impl.hpp"
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#endif // OPM_BLACKOILMULTISEGMENTMODEL_HEADER_INCLUDED
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