opm-simulators/opm/simulators/aquifers/AquiferInterface.hpp

/*
  Copyright 2017 SINTEF Digital, Mathematics and Cybernetics.
  Copyright 2017 Statoil ASA.
  Copyright 2017 IRIS

  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_AQUIFERINTERFACE_HEADER_INCLUDED
#define OPM_AQUIFERINTERFACE_HEADER_INCLUDED

#include <opm/parser/eclipse/EclipseState/AquiferCT.hpp>
#include <opm/parser/eclipse/EclipseState/Aquifetp.hpp>
#include <opm/parser/eclipse/EclipseState/Aquancon.hpp>
#include <opm/common/utility/numeric/linearInterpolation.hpp>

#include <opm/material/common/MathToolbox.hpp>
#include <opm/material/densead/Math.hpp>
#include <opm/material/densead/Evaluation.hpp>
#include <opm/material/fluidstates/BlackOilFluidState.hpp>

#include <vector>
#include <algorithm>
#include <unordered_map>

namespace Opm
{
  template<typename TypeTag>
  class AquiferInterface
  {
  public:
    typedef typename GET_PROP_TYPE(TypeTag, Simulator) Simulator;
    typedef typename GET_PROP_TYPE(TypeTag, ElementContext) ElementContext;
    typedef typename GET_PROP_TYPE(TypeTag, FluidSystem) FluidSystem;
    typedef typename GET_PROP_TYPE(TypeTag, Indices) BlackoilIndices;
    typedef typename GET_PROP_TYPE(TypeTag, RateVector) RateVector;
    typedef typename GET_PROP_TYPE(TypeTag, IntensiveQuantities) IntensiveQuantities;

    enum { enableTemperature = GET_PROP_VALUE(TypeTag, EnableTemperature) };
    enum { enableEnergy = GET_PROP_VALUE(TypeTag, EnableEnergy) };

    static const int numEq = BlackoilIndices::numEq;
    typedef double Scalar;

    typedef DenseAd::Evaluation<double, /*size=*/numEq> Eval;

    typedef Opm::BlackOilFluidState<Eval, FluidSystem, enableTemperature, enableEnergy, BlackoilIndices::gasEnabled, BlackoilIndices::numPhases> FluidState;

    static const auto waterCompIdx = FluidSystem::waterCompIdx;
    static const auto waterPhaseIdx = FluidSystem::waterPhaseIdx;

    // Constructor
    AquiferInterface( const Aquancon::AquanconOutput& connection,
                      const std::unordered_map<int, int>& cartesian_to_compressed,
                      const Simulator& ebosSimulator)
                    : connection_(connection)
                    , ebos_simulator_(ebosSimulator)
                    , cartesian_to_compressed_(cartesian_to_compressed)
    {}

    // Deconstructor
    virtual ~AquiferInterface() {}

    void initialSolutionApplied()
    {
      initQuantities(connection_);
    }

    void beginTimeStep()
    {
      ElementContext elemCtx(ebos_simulator_);
      auto elemIt = ebos_simulator_.gridView().template begin<0>();
      const auto& elemEndIt = ebos_simulator_.gridView().template end<0>();
      for (; elemIt != elemEndIt; ++elemIt) {
        const auto& elem = *elemIt;

        elemCtx.updatePrimaryStencil(elem);

        int cellIdx = elemCtx.globalSpaceIndex(0, 0);
        int idx = cellToConnectionIdx_[cellIdx];
        if (idx < 0)
        continue;

        elemCtx.updateIntensiveQuantities(0);
        const auto& iq = elemCtx.intensiveQuantities(0, 0);
        pressure_previous_[idx] = Opm::getValue(iq.fluidState().pressure(waterPhaseIdx));
      }
    }

    template <class Context>
    void addToSource(RateVector& rates, const Context& context, unsigned spaceIdx, unsigned timeIdx)
    {
      unsigned cellIdx = context.globalSpaceIndex(spaceIdx, timeIdx);

      int idx = cellToConnectionIdx_[cellIdx];
      if (idx < 0)
      return;

      // We are dereferencing the value of IntensiveQuantities because cachedIntensiveQuantities return a const pointer to
      // IntensiveQuantities of that particular cell_id
      const IntensiveQuantities intQuants = context.intensiveQuantities(spaceIdx, timeIdx);
      // This is the pressure at td + dt
      updateCellPressure(pressure_current_,idx,intQuants);
      updateCellDensity(idx,intQuants);
      calculateInflowRate(idx, context.simulator());
      rates[BlackoilIndices::conti0EqIdx + FluidSystem::waterCompIdx] +=
      Qai_[idx]/context.dofVolume(spaceIdx, timeIdx);
    }

  protected:
    inline Scalar gravity_() const
    {
      return ebos_simulator_.problem().gravity()[2];
    }

    inline void initQuantities(const Aquancon::AquanconOutput& connection)
    {
      // We reset the cumulative flux at the start of any simulation, so, W_flux = 0
      W_flux_ = 0.;

      // We next get our connections to the aquifer and initialize these quantities using the initialize_connections function
      initializeConnections(connection);
      calculateAquiferCondition();
      calculateAquiferConstants();

      pressure_previous_.resize(cell_idx_.size(), 0.);
      pressure_current_.resize(cell_idx_.size(), 0.);
      Qai_.resize(cell_idx_.size(), 0.0);
    }

    inline void updateCellPressure(std::vector<Eval>& pressure_water, const int idx, const IntensiveQuantities& intQuants)
    {
      const auto& fs = intQuants.fluidState();
      pressure_water.at(idx) = fs.pressure(waterPhaseIdx);
    }

    inline void updateCellPressure(std::vector<Scalar>& pressure_water, const int idx, const IntensiveQuantities& intQuants)
    {
      const auto& fs = intQuants.fluidState();
      pressure_water.at(idx) = fs.pressure(waterPhaseIdx).value();
    }

    inline void updateCellDensity(const int idx, const IntensiveQuantities& intQuants)
    {
      const auto& fs = intQuants.fluidState();
      rhow_.at(idx) = fs.density(waterPhaseIdx);
    }

    template<class faceCellType, class ugridType>
    inline double getFaceArea(const faceCellType& faceCells, const ugridType& ugrid,
                              const int faceIdx, const int idx,
                              const Aquancon::AquanconOutput& connection) const
    {
      // Check now if the face is outside of the reservoir, or if it adjoins an inactive cell
      // Do not make the connection if the product of the two cellIdx > 0. This is because the
      // face is within the reservoir/not connected to boundary. (We still have yet to check for inactive cell adjoining)
      double faceArea = 0.;
      const auto cellNeighbour0 = faceCells(faceIdx,0);
      const auto cellNeighbour1 = faceCells(faceIdx,1);
      const auto defaultFaceArea = Opm::UgGridHelpers::faceArea(ugrid, faceIdx);
      const auto calculatedFaceArea = (!connection.influx_coeff.at(idx))?
      defaultFaceArea :
      *(connection.influx_coeff.at(idx));
      faceArea = (cellNeighbour0 * cellNeighbour1 > 0)? 0. : calculatedFaceArea;
      if (cellNeighbour1 == 0){
        faceArea = (cellNeighbour0 < 0)? faceArea : 0.;
      }
      else if (cellNeighbour0 == 0){
        faceArea = (cellNeighbour1 < 0)? faceArea : 0.;
      }
      return faceArea;
    }

    virtual void endTimeStep() = 0;

    const Aquancon::AquanconOutput connection_;
    const Simulator& ebos_simulator_;
    const std::unordered_map<int, int> cartesian_to_compressed_;

    // Grid variables
    std::vector<size_t> cell_idx_;
    std::vector<Scalar> faceArea_connected_;
    std::vector<int> cellToConnectionIdx_;
    // Quantities at each grid id
    std::vector<Scalar> cell_depth_;
    std::vector<Scalar> pressure_previous_;
    std::vector<Eval> pressure_current_;
    std::vector<Eval> Qai_;
    std::vector<Eval> rhow_;
    std::vector<Scalar> alphai_;

    Scalar mu_w_; //water viscosity
    Scalar Tc_; // Time constant
    Scalar pa0_; // initial aquifer pressure

    Eval W_flux_;

    virtual void initializeConnections(const Aquancon::AquanconOutput& connection) =0;

    virtual Scalar dpai(int idx) = 0;

    virtual void calculateInflowRate(int idx, const Simulator& simulator) = 0;

    virtual void calculateAquiferCondition() = 0;

    virtual void calculateAquiferConstants() = 0;

    virtual Scalar calculateReservoirEquilibrium() =0;
      // This function is used to initialize and calculate the alpha_i for each grid connection to the aquifer
  };
} // namespace Opm
#endif