transienttransportproblem.h

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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 transienttransportproblem_h
#define transienttransportproblem_h
 
#include "engngm.h"
#include "sparselinsystemnm.h"
#include "sparsemtrx.h"
#include "sparsenonlinsystemnm.h"
 
#include <memory>


#define _IFT_TransientTransportProblem_Name "transienttransport"
#define _IFT_TransientTransportProblem_alpha "alpha" 
#define _IFT_TransientTransportProblem_deltaT "deltat" 
#define _IFT_TransientTransportProblem_initt "initt" 
#define _IFT_TransientTransportProblem_dtFunction "dtfunction" 
#define _IFT_TransientTransportProblem_prescribedTimes "prescribedtimes" 
#define _IFT_TransientTransportProblem_keepTangent "keeptangent" 
#define _IFT_TransientTransportProblem_lumped "lumped" 
#define _IFT_TransientTransportProblem_exportFields "exportfields" 
 
namespace oofem {
class DofDistributedPrimaryField;
class Function;

class TransientTransportProblem : public EngngModel
{
protected:
    SparseMtrxType sparseMtrxType = SMT_Skyline;
    std :: unique_ptr< DofDistributedPrimaryField > field;
 
    std :: unique_ptr< SparseMtrx > effectiveMatrix;
 
    FloatArray solution;
    FloatArray internalForces;
    FloatArray eNorm;

    std :: unique_ptr< SparseNonLinearSystemNM > nMethod;
 
    double alpha = 0.5;
    int dtFunction = 0;
    FloatArray prescribedTimes;
    double initT = 0.;
    double deltaT = 1.;
    bool keepTangent = false, hasTangent = false;
    bool lumped = false;
 
    IntArray exportFields;
 
public:
    TransientTransportProblem(int i, EngngModel *master=nullptr);
 
    void solveYourselfAt(TimeStep *tStep) override;
    void updateComponent(TimeStep *tStep, NumericalCmpn cmpn, Domain *d) override;
    bool newDofHandling() override { return true; }
    void updateSolution(FloatArray &solutionVector, TimeStep *tStep, Domain *d) override;
    void updateInternalRHS(FloatArray &answer, TimeStep *tStep, Domain *d, FloatArray *eNorm) override;
    void updateMatrix(SparseMtrx &mat, TimeStep *tStep, Domain *d) override;
    double giveUnknownComponent(ValueModeType mode, TimeStep *tStep, Domain *d, Dof *dof) override;
    void saveContext(DataStream &stream, ContextMode mode) override;
    void restoreContext(DataStream &stream, ContextMode mode) override;
 
    virtual void applyIC();
 
    int requiresUnknownsDictionaryUpdate() override;
    int giveUnknownDictHashIndx(ValueModeType mode, TimeStep *tStep) override;
    void updateDomainLinks() override;
 
    Function *giveDtFunction();
    double giveDeltaT(int n);
    double giveDiscreteTime(int iStep);
 
    TimeStep *giveNextStep() override;
    TimeStep *giveSolutionStepWhenIcApply(bool force = false) override;
    NumericalMethod *giveNumericalMethod(MetaStep *mStep) override;
 
    void initializeFrom(InputRecord &ir) override;
 
    bool requiresEquationRenumbering(TimeStep *tStep) override;
    int forceEquationNumbering() override;
 
    void printOutputAt(FILE *file, TimeStep *tStep) override;
    
    void updateYourself(TimeStep *tStep) override;
    
    int checkConsistency() override;
    FieldPtr giveField (FieldType key, TimeStep *tStep) override;
    // identification
    const char *giveInputRecordName() const { return _IFT_TransientTransportProblem_Name; }
    const char *giveClassName() const override { return "TransientTransportProblem"; }
    fMode giveFormulation() override { return TL; }
};
} // end namespace oofem
#endif // transienttransportproblem_h