pfemelement.h

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/*
 *
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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
 */
 
//   ********************************************************************************
//   *** GENERAL ELEMENT CLASS FOR FLUID DYNAMIC PROBLEMS SOLVED WITH PFEM METHOD ***
//   ********************************************************************************
 
#ifndef pfemelement_h
#define pfemelement_h
 
 
#include "fmelement.h"
#include "femcmpnn.h"
#include "domain.h"
#include "floatmatrix.h"
#include "material.h"
 
#include "primaryfield.h"
 
namespace oofem {
class TimeStep;
class Node;
class Material;
class GaussPoint;
class FloatMatrix;
class FloatArray;
class IntArray;

class PFEMElement : public FMElement
{
public:
    PFEMElement(int, Domain *);
    virtual ~PFEMElement();

    void initializeFrom(InputRecord &ir, int priority) override;
 
    // characteristic  matrix
    void giveCharacteristicMatrix(FloatMatrix & answer, CharType, TimeStep *) override;
    void giveCharacteristicVector(FloatArray & answer, CharType, ValueModeType, TimeStep *) override;

    virtual void computeDiagonalMassMtrx(FloatArray &answer, TimeStep *) = 0;
    virtual void computeDiagonalMassMtrx(FloatMatrix &answer, TimeStep *) = 0;
    virtual double computeCriticalTimeStep(TimeStep *tStep) = 0;
 
    void updateInternalState(TimeStep *tStep) override;
    void printOutputAt(FILE *file, TimeStep *tStep) override;
    int checkConsistency() override;

    virtual FEInterpolation *giveVelocityInterpolation() = 0;
    virtual FEInterpolation *givePressureInterpolation() = 0;
 
    void computeLoadVector(FloatArray &answer, BodyLoad *load, CharType type, ValueModeType mode, TimeStep *tStep) override;
    
    // definition
    const char *giveClassName() const override { return "PFEMElement"; }

    virtual const IntArray &giveVelocityDofMask() const = 0;
    virtual const IntArray &givePressureDofMask() const = 0;
 
#ifdef __OOFEG
    virtual int giveInternalStateAtNode(FloatArray &answer, InternalStateType type, InternalStateMode mode,
                                        int node, TimeStep *atTime);
    //
    // Graphics output
    //
    //virtual void drawYourself(oofegGraphicContext&);
    //virtual void drawRawGeometry(oofegGraphicContext&) {}
    //virtual void drawDeformedGeometry(oofegGraphicContext&, UnknownType) {}
#endif

    virtual void computeBodyLoadVectorAt(FloatArray &answer, BodyLoad *load, TimeStep *tStep, ValueModeType mode) = 0;
 
    
    virtual void computeDeviatoricStress(FloatArray &answer, GaussPoint *gp, TimeStep *) = 0;
    virtual void computeDeviatoricStressDivergence(FloatArray &answer, TimeStep *atTime) = 0;
    virtual void computeBMatrix(FloatMatrix &answer, GaussPoint *gp) = 0;
    virtual void computeStiffnessMatrix(FloatMatrix &answer, MatResponseMode mode, TimeStep *atTime) = 0; //K
    virtual void computePressureLaplacianMatrix(FloatMatrix &answer, TimeStep *atTime) = 0;
    virtual void computeGradientMatrix(FloatMatrix &answer, TimeStep *atTime) = 0; //G
    virtual void computeDivergenceMatrix(FloatMatrix &answer, TimeStep *atTime) = 0; //D
    virtual void computePrescribedRhsVector(FloatArray &answer, TimeStep *tStep, ValueModeType mode) = 0;
};
} // end namespace oofem
#endif // pfemelement_h