tr21stokes.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 tr21stokes_h
#define tr21stokes_h
 
#include "fmelement.h"
#include "nodalaveragingrecoverymodel.h"
#include "zznodalrecoverymodel.h"
#include "spatiallocalizer.h"
#include "matresponsemode.h"
 
#define _IFT_Tr21Stokes_Name "tr21stokes"
 
namespace oofem {
class FEI2dTrLin;
class FEI2dTrQuad;

class Tr21Stokes : public FMElement,
public NodalAveragingRecoveryModelInterface,
public ZZNodalRecoveryModelInterface,
public SpatialLocalizerInterface
{
protected:
    static FEI2dTrLin interpolation_lin;
    static FEI2dTrQuad interpolation_quad;
    static IntArray momentum_ordering, conservation_ordering;
    static IntArray edge_ordering [ 3 ];
 
public:
    Tr21Stokes(int n, Domain * d);
 
    double computeVolumeAround(GaussPoint *gp) override;
 
    void computeGaussPoints() override;
 
    void giveCharacteristicVector(FloatArray &answer, CharType type, ValueModeType mode, TimeStep *tStep) override;
    void giveCharacteristicMatrix(FloatMatrix &answer, CharType type, TimeStep *tStep) override;
 
    void computeInternalForcesVector(FloatArray &answer, TimeStep *tStep);
    void computeStiffnessMatrix(FloatMatrix &answer, MatResponseMode mode, TimeStep *tStep);
 
    void computeExternalForcesVector(FloatArray &answer, TimeStep *tStep);
    void computeLoadVector(FloatArray &answer, BodyLoad *load, CharType type, ValueModeType mode, TimeStep *tStep) override;
    void computeBoundarySurfaceLoadVector(FloatArray &answer, BoundaryLoad *load, int boundary, CharType type, ValueModeType mode, TimeStep *tStep, bool global=true) override;
 
    const char *giveClassName() const override { return "Tr21Stokes"; }
    const char *giveInputRecordName() const override { return _IFT_Tr21Stokes_Name; }
    MaterialMode giveMaterialMode() override { return _2dFlow; }
    Element_Geometry_Type giveGeometryType() const override {return EGT_triangle_2;}
 
 
    int computeNumberOfDofs() override;
 
    FEInterpolation *giveInterpolation() const override;
    FEInterpolation *giveInterpolation(DofIDItem id) const override;

    void giveDofManDofIDMask(int inode, IntArray &answer) const override;
 
    void updateYourself(TimeStep *tStep) override;
 
    Interface *giveInterface(InterfaceType it) override;
 
    void computeField(ValueModeType u, TimeStep *tStep, const FloatArray &coords, FloatArray &answer) override;
 
    void NodalAveragingRecoveryMI_computeNodalValue(FloatArray &answer, int node, InternalStateType type, TimeStep *tStep) override;
};
} // end namespace oofem
#endif // tr21stokes_h