nonstationarytransportproblem.h

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/*
 *
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 *               ##   ##  ##   ##  ##      ##      ## ### ##
 *              ##   ##  ##   ##  ####    ####    ##  #  ##
 *             ##   ##  ##   ##  ##      ##      ##     ##
 *            ##   ##  ##   ##  ##      ##      ##     ##
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 *
 *
 *             OOFEM : Object Oriented Finite Element Code
 *
 *               Copyright (C) 1993 - 2025   Borek Patzak
 *
 *
 *
 *       Czech Technical University, Faculty of Civil Engineering,
 *   Department of Structural Mechanics, 166 29 Prague, Czech Republic
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This program 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
#ifndef nonstationarytransportproblem_h
#define nonstationarytransportproblem_h
 
#include "sparselinsystemnm.h"
#include "sparsemtrx.h"
#include "primaryfield.h"
#include "dofdistributedprimaryfield.h"
#include "tm/Materials/transportmaterial.h"
#include "tm/EngineeringModels/stationarytransportproblem.h"
#include "linsystsolvertype.h"


#define _IFT_NonStationaryTransportProblem_Name "nonstationaryproblem"
#define _IFT_NonStationaryTransportProblem_initt "initt"
#define _IFT_NonStationaryTransportProblem_deltat "deltat"
#define _IFT_NonStationaryTransportProblem_deltatfunction "deltatfunction"
#define _IFT_NonStationaryTransportProblem_prescribedtimes "prescribedtimes"
#define _IFT_NonStationaryTransportProblem_alpha "alpha"
#define _IFT_NonStationaryTransportProblem_lumpedcapa "lumpedcapa"
#define _IFT_NonStationaryTransportProblem_changingproblemsize "changingproblemsize"
 
namespace oofem {
 

class TransportExternalForceAssembler : public VectorAssembler
{
public:
    void vectorFromElement(FloatArray &vec, Element &element, TimeStep *tStep, ValueModeType mode) const override;
};
 

class MidpointLhsAssembler : public MatrixAssembler
{
protected:
    double lumped;
    double alpha;
 
public:
    MidpointLhsAssembler(bool lumped, double alpha);
    void matrixFromElement(FloatMatrix &mat, Element &element, TimeStep *tStep) const override;
};
 

class IntSourceLHSAssembler : public MatrixAssembler
{
public:
    void matrixFromElement(FloatMatrix &mat, Element &element, TimeStep *tStep) const override;
};
 

class NonStationaryTransportProblem : public StationaryTransportProblem
{
protected:
    StateCounterType internalVarUpdateStamp;
 
    LinSystSolverType solverType = ST_Direct; 
    std :: unique_ptr< SparseLinearSystemNM > linSolver; 

    FloatArray bcRhs;

    double initT = 0.;
    double deltaT = 0.;
    double alpha = 0.;

    int lumpedCapacityStab = 0;

    int dtFunction = 0;

    FloatArray discreteTimes;

    bool changingProblemSize = false;
 
public:
    NonStationaryTransportProblem(int i, EngngModel * _master);
 
    void solveYourselfAt(TimeStep *tStep) override;
    void updateYourself(TimeStep *tStep) override;
    double giveUnknownComponent(ValueModeType, TimeStep *tStep, Domain *d, Dof *dof) override;
    void saveContext(DataStream &stream, ContextMode mode) override;
    void restoreContext(DataStream &stream, ContextMode mode) override;
 
    void updateDomainLinks() override;
 
    TimeStep *giveNextStep() override;
    TimeStep *giveSolutionStepWhenIcApply(bool force = false) override;
    NumericalMethod *giveNumericalMethod(MetaStep *mStep) override;
 
    void initializeFrom(InputRecord &ir) override;
    int checkConsistency() override;
 
    // identification
    const char *giveInputRecordName() const { return _IFT_NonStationaryTransportProblem_Name; }
    const char *giveClassName() const override { return "NonStationaryTransportProblem"; }
    fMode giveFormulation() override { return TL; }

    int requiresUnknownsDictionaryUpdate() override { return changingProblemSize; }
    bool requiresEquationRenumbering(TimeStep *tStep) override { return changingProblemSize; }
    //Store solution vector to involved DoFs
    //void updateDofUnknownsDictionary(DofManager *dman, TimeStep *tStep) override;
 
    int giveUnknownDictHashIndx(ValueModeType mode, TimeStep *tStep) override;

    Function *giveDtFunction();

    double giveDeltaT(int n);

    double giveDiscreteTime(int n);
 
#ifdef __CEMHYD_MODULE
    void averageOverElements(TimeStep *tStep);
#endif
 
protected:
    virtual void assembleAlgorithmicPartOfRhs(FloatArray &rhs,
                                              const UnknownNumberingScheme &s, TimeStep *tStep);

    virtual void applyIC(TimeStep *tStep);

    virtual void assembleDirichletBcRhsVector(FloatArray &answer, TimeStep *tStep, ValueModeType mode,
                                              const UnknownNumberingScheme &s, Domain *d);
    virtual void copyUnknownsInDictionary(ValueModeType mode, TimeStep *fromTime, TimeStep *toTime);

    virtual void updateInternalState(TimeStep *tStep);
};
} // end namespace oofem
#endif // nonstationarytransportproblem_h