pfemelement2d.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
 */
 
//   *****************************************************************************
//   *** GENERAL 2D ELEMENT FOR FLUID DYNAMIC PROBLEMS SOLVED WITH PFEM METHOD ***
//   *****************************************************************************
 
#ifndef pfemelement2d_h
#define pfemelement2d_h
 
 
#include "pfemelement.h"
#include "femcmpnn.h"
#include "domain.h"
#include "floatmatrix.h"
#include "material.h"
 
 
 
#include "fei2dtrlin.h"
 
namespace oofem {
class TimeStep;
class Node;
class Material;
class GaussPoint;
class FloatMatrix;
class FloatArray;
class IntArray;

class PFEMElement2d : public PFEMElement
{
protected:
 
public:
    PFEMElement2d(int n, Domain *d);
    virtual ~PFEMElement2d();
 
    double computeCriticalTimeStep(TimeStep *tStep) override = 0;
 
    const char *giveClassName() const override { return "PFEMElement2d"; }
    Element_Geometry_Type giveGeometryType() const override { return EGT_triangle_1; }
 
    void giveElementDofIDMask(IntArray &answer) const override = 0;
    void giveDofManDofIDMask(int inode, IntArray &answer) const override = 0;
    int computeNumberOfDofs() override = 0;
    void initializeFrom(InputRecord &ir, int priority) override;
    int checkConsistency() override;
 
    Interface *giveInterface(InterfaceType) override = 0;
 
    virtual Element *giveElement() { return this; }
 
#ifdef __OOFEG
    virtual int giveInternalStateAtNode(FloatArray &answer, InternalStateType type, InternalStateMode mode,
                                        int node, TimeStep *tStep) = 0;
    // Graphics output
    //virtual void drawYourself (oofegGraphicContext&);
    //virtual void drawRawGeometry(oofegGraphicContext &);
    //virtual void drawScalar(oofegGraphicContext &context);
    //virtual void drawDeformedGeometry(oofegGraphicContext&, UnknownType) {}
#endif
 
    FEInterpolation *giveVelocityInterpolation() override = 0;
    FEInterpolation *givePressureInterpolation() override = 0;
 
protected:
    void computeGaussPoints() override = 0;
    void computeDeviatoricStress(FloatArray &answer, GaussPoint *gp, TimeStep *tStep) override = 0;
    void computeDeviatoricStressDivergence(FloatArray &answer, TimeStep *tStep) override = 0;
 
    void computeBMatrix(FloatMatrix &answer, GaussPoint *gp) override;
    void computeStiffnessMatrix(FloatMatrix &answer, MatResponseMode mode, TimeStep *tStep) override; //K
    void computePressureLaplacianMatrix(FloatMatrix &answer, TimeStep *tStep) override; //L
    void computeDivergenceMatrix(FloatMatrix &answerx, TimeStep *tStep) override; //D
    void computeGradientMatrix(FloatMatrix &answer, TimeStep *tStep) override; //G
 
    void computePrescribedRhsVector(FloatArray &answer, TimeStep *tStep, ValueModeType mode) override;

    void computeEdgeNMatrixAt(FloatMatrix &answer, int iedge, GaussPoint *gp);
    void computeEgdeNVectorAt(FloatArray &answer, int iedge, GaussPoint *gp);
    double computeEdgeVolumeAround(GaussPoint *gp, int iEdge);
    void giveEdgeDofMapping(IntArray &answer, int iEdge) const;
};
} // end namespace oofem
#endif // pfemelement_2d_h