TimeStepControl.hpp

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/*
  Copyright 2014 IRIS AS
  Copyright 2015 Dr. Blatt - HPC-Simulation-Software & Services
  Copyright 2015 Statoil AS
 
  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_TIMESTEPCONTROL_HEADER_INCLUDED
#define OPM_TIMESTEPCONTROL_HEADER_INCLUDED
 
#include <opm/simulators/timestepping/TimeStepControlInterface.hpp>
#include <opm/simulators/timestepping/AdaptiveSimulatorTimer.hpp>
 
#include <string>
#include <vector>
 
namespace Opm
{
    enum class TimeStepControlType {
      SimpleIterationCount,
      PID,
      PIDAndIterationCount,
      HardCodedTimeStep,
      General3rdOrder,
    };
 
    enum class ToleranceTestVersions {
        Standard,
        ControlErrorFiltering,
    };
 
    enum class InternalControlVersions {
        IController,
        General3rdOrder,
    };
 
    //
    class SimpleIterationCountTimeStepControl : public TimeStepControlInterface
    {
    public:
        static constexpr TimeStepControlType Type = TimeStepControlType::SimpleIterationCount;
        
        SimpleIterationCountTimeStepControl() = default;
 
        SimpleIterationCountTimeStepControl(const int target_iterations,
                                            const double decayrate,
                                            const double growthrate,
                                            const bool verbose);
 
        static SimpleIterationCountTimeStepControl serializationTestObject();
 
        double computeTimeStepSize(const double dt,
                                   const int iterations,
                                   const RelativeChangeInterface& /* relativeChange */,
                                   const AdaptiveSimulatorTimer& /* substepTimer */ ) const override;
        
        bool timeStepAccepted(const double /* error */,
                              const double /* timeStepJustCompleted */) const override { return true; }
 
        template<class Serializer>
        void serializeOp(Serializer& serializer)
        {
            serializer(target_iterations_);
            serializer(decayrate_);
            serializer(growthrate_);
            serializer(verbose_);
        }
 
        bool operator==(const SimpleIterationCountTimeStepControl&) const;
 
    protected:
        const int     target_iterations_ = 0;
        const double  decayrate_ = 0.0;
        const double  growthrate_ = 0.0;
        const bool    verbose_ = false;
    };
 
    class PIDTimeStepControl : public TimeStepControlInterface
    {
    public:
        static constexpr TimeStepControlType Type = TimeStepControlType::PID;
 
        PIDTimeStepControl() = default;
 
        PIDTimeStepControl(const double tol,
                           const bool verbose);
 
        static PIDTimeStepControl serializationTestObject();
 
        double computeTimeStepSize(const double dt,
                                   const int /* iterations */,
                                   const RelativeChangeInterface& relativeChange,
                                   const AdaptiveSimulatorTimer& /* substepTimer */ ) const override;
 
        bool timeStepAccepted(const double /* error */,
                              const double /* timeStepJustCompleted */) const override { return true; }
 
        template<class Serializer>
        void serializeOp(Serializer& serializer)
        {
            serializer(tol_);
            serializer(errors_);
            serializer(verbose_);
        }
 
        bool operator==(const PIDTimeStepControl&) const;
 
    protected:
        const double tol_ = 0.1;
        mutable std::vector< double > errors_{};
        const bool verbose_ = false;
    };
 
    //
    class PIDAndIterationCountTimeStepControl : public PIDTimeStepControl
    {
        typedef PIDTimeStepControl BaseType;
    public:
        static constexpr TimeStepControlType Type = TimeStepControlType::PIDAndIterationCount;
 
        PIDAndIterationCountTimeStepControl() = default;
 
        PIDAndIterationCountTimeStepControl(const int target_iterations,
                                            const double decayDampingFactor,
                                            const double growthDampingFactor,
                                            const double tol,
                                            const double minTimeStepBasedOnIterations,
                                            const bool verbose);
 
        static PIDAndIterationCountTimeStepControl serializationTestObject();
 
        double computeTimeStepSize(const double dt,
                                   const int iterations,
                                   const RelativeChangeInterface& relativeChange,
                                   const AdaptiveSimulatorTimer& /* substepTimer */ ) const override;
 
        bool timeStepAccepted(const double /* error */,
                              const double /* timeStepJustCompleted */) const override { return true; }
 
        template<class Serializer>
        void serializeOp(Serializer& serializer)
        {
            serializer(static_cast<PIDTimeStepControl&>(*this));
            serializer(target_iterations_);
            serializer(decayDampingFactor_);
            serializer(growthDampingFactor_);
            serializer(minTimeStepBasedOnIterations_);
            serializer(verbose_);
        }
 
        bool operator==(const PIDAndIterationCountTimeStepControl&) const;
 
    protected:
        const int target_iterations_ = 8;
        const double decayDampingFactor_ = 1.0;
        const double growthDampingFactor_ = 3.2;
        const double minTimeStepBasedOnIterations_ = 0.0;
        const bool verbose_ = false;
    };
 
    class General3rdOrderController : public TimeStepControlInterface
    {
    public:
        static constexpr TimeStepControlType Type = TimeStepControlType::General3rdOrder;
 
        General3rdOrderController() = default;
        
        General3rdOrderController(const double tolerance,
                                  const double safetyFactor,
                                  const bool rejectCompletedStep,
                                  const std::string& toleranceTestVersion,
                                  const double maxReductionTimeStep,
                                  const std::string& parameters,
                                  const bool verbose);
 
        static General3rdOrderController serializationTestObject();
 
        double computeTimeStepSize(const double dt,
                                   const int /* iterations */,
                                   const RelativeChangeInterface& /* relativeChange */,
                                   const AdaptiveSimulatorTimer& substepTimer) const override;
 
        double timeStepFactor(const std::array<double, 3>& errors, const std::array<double, 3>& timeSteps) const;
 
        bool timeStepAccepted(const double error,
                              const double timeStepJustCompleted) const override;
 
        template<class Serializer>
        void serializeOp(Serializer& serializer)
        {
            serializer(tolerance_);
            serializer(safetyFactor_);
            serializer(rejectCompletedStep_);
            serializer(errors_);
            serializer(timeSteps_);
            serializer(beta_);
            serializer(alpha_);
            serializer(controllerVersion_);
            serializer(toleranceTestVersion_);
            serializer(maxReductionTimeStep_);
            serializer(verbose_);
        }
 
        bool operator==(const General3rdOrderController&) const;
 
 
    protected:
        const double tolerance_ = 0.1;
        const double safetyFactor_ = 0.8;
        const bool rejectCompletedStep_ = false;
        mutable std::array<double, 3> errors_{};
        mutable std::array<double, 3> timeSteps_{};
        mutable std::array<double, 3> beta_{0.125, 0.25, 0.125};
        mutable std::array<double, 2> alpha_{0.75, 0.25};
        mutable InternalControlVersions controllerVersion_{InternalControlVersions::IController};
        ToleranceTestVersions toleranceTestVersion_{ToleranceTestVersions::Standard};
        const double maxReductionTimeStep_ = 0.1;
        const bool verbose_ = false;
    };
 
    class HardcodedTimeStepControl : public TimeStepControlInterface
    {
    public:
        static constexpr TimeStepControlType Type = TimeStepControlType::HardCodedTimeStep;
        
        HardcodedTimeStepControl() = default;
 
        explicit HardcodedTimeStepControl(const std::string& filename);
 
        static HardcodedTimeStepControl serializationTestObject();
 
        double computeTimeStepSize(const double dt,
                                   const int /* iterations */,
                                   const RelativeChangeInterface& /*relativeChange */,
                                   const AdaptiveSimulatorTimer& substepTimer) const override;
 
        bool timeStepAccepted(const double /* error */,
                              const double /* timeStepJustCompleted */) const override { return true; }
 
        template<class Serializer>
        void serializeOp(Serializer& serializer)
        {
            serializer(subStepTime_);
        }
 
        bool operator==(const HardcodedTimeStepControl&) const;
 
    protected:
        // store the time (in days) of the substeps the simulator should use
        std::vector<double> subStepTime_;
    };
 
 
} // end namespace Opm
#endif