stokesflow.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 stokesflow_h
#define stokesflow_h
 
#include "fluidmodel.h"
#include "sparsemtrxtype.h"
#include "topologydescription.h"
#include "linsystsolvertype.h"
#include "floatmatrix.h"
#include "primaryfield.h"
#include "floatarray.h"


#define _IFT_StokesFlow_Name "stokesflow"
#define _IFT_StokesFlow_deltat "deltat"
 
namespace oofem {
class SparseNonLinearSystemNM;
class MeshQualityErrorEstimator;

class StokesFlow : public FluidModel
{
protected:
    double deltaT = 1.;
    std :: unique_ptr< PrimaryField > velocityPressureField;
    SparseMtrxType sparseMtrxType;
    std :: unique_ptr< SparseNonLinearSystemNM > nMethod;
    LinSystSolverType solverType = ST_Direct;
    FloatArray eNorm;

    std :: unique_ptr< MeshQualityErrorEstimator > meshqualityee;
    double maxdef = 1.;
 
    std :: unique_ptr< SparseMtrx > stiffnessMatrix;
    FloatArray solutionVector;
    FloatArray internalForces;

    TopologyState ts;
 
public:
    StokesFlow(int i, EngngModel * _master = nullptr);
    ~StokesFlow();
 
    void solveYourselfAt(TimeStep *tStep) override;

    void updateYourself(TimeStep *tStep) override;
 
    double giveUnknownComponent(ValueModeType mode, TimeStep *tStep, Domain *domain, Dof *dof) override;
    bool newDofHandling() override { return true; }
 
    double giveReynoldsNumber() override;
 
    int forceEquationNumbering(int id) override;
 
    void initializeFrom(InputRecord &ir) override;
 
    int checkConsistency() override;
    void doStepOutput(TimeStep *tStep) override;
    void updateInternalState(TimeStep *tStep);
    void updateComponent(TimeStep *tStep, NumericalCmpn cmpn, Domain *d) override;
    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;
    NumericalMethod *giveNumericalMethod(MetaStep *mStep) override;
    TimeStep *giveNextStep() override;
 
    const char *giveClassName() const override { return "StokesFlow"; }
    const char *giveInputRecordName() const { return _IFT_StokesFlow_Name; }
};
} // end namespace oofem
 
#endif // stokesflow_h