transportgradientneumann.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
 */
 
#pragma once
 
//#include "prescribedgradienthomogenization.h"
#include "activebc.h"
#include "floatarray.h"
 
#include <memory>
 
#define _IFT_TransportGradientNeumann_Name "tmgradneumann"
#define _IFT_TransportGradientNeumann_gradient "gradient"
#define _IFT_TransportGradientNeumann_centerCoords "centercoords"
#define _IFT_TransportGradientNeumann_surfSets "surfsets" 
#define _IFT_TransportGradientNeumann_dispControl "useeta" 
 
namespace oofem {
class Node;
class Element;

class OOFEM_EXPORT TransportGradientNeumann : public ActiveBoundaryCondition //, public Homogenization
{
public:
    TransportGradientNeumann(int n, Domain *d);
 
    int giveNumberOfInternalDofManagers() override { return 1; }
    DofManager *giveInternalDofManager(int i) override;
 
    void initializeFrom(InputRecord &ir) override;
    void giveInputRecord(DynamicInputRecord &input) override;
    void postInitialize() override;
 
    bcType giveType() const override { return UnknownBT; }
 
    void scale(double s) override;
 
    double domainSize();
 
    void assembleVector(FloatArray &answer, TimeStep *tStep,
                        CharType type, ValueModeType mode,
                        const UnknownNumberingScheme &s, FloatArray *eNorm=nullptr, void*lock=nullptr) override;
 
    void assemble(SparseMtrx &answer, TimeStep *tStep, CharType type, const UnknownNumberingScheme &r_s,
                  const UnknownNumberingScheme &c_s, double scale=1.0, void*lock=nullptr) override;
 
    void giveLocationArrays(std :: vector< IntArray > &rows, std :: vector< IntArray > &cols, CharType type,
                            const UnknownNumberingScheme &r_s, const UnknownNumberingScheme &c_s) override;
 
    const char *giveClassName() const override { return "TransportGradientNeumann"; }
    const char *giveInputRecordName() const override { return _IFT_TransportGradientNeumann_Name; }
 
    virtual void computeField(FloatArray &flux, TimeStep *tStep);
    virtual void computeTangent(FloatMatrix &tangent, TimeStep *tStep);
 
    void giveFluxLocationArray(IntArray &oCols, const UnknownNumberingScheme &r_s);
 
protected:
    std :: unique_ptr< Node > mpFluxHom;
    IntArray mFluxIds;
    FloatArray mGradient;
    FloatArray mCenterCoord;
    bool dispControl;
 
    IntArray surfSets;

    std :: vector< std :: vector< FloatArray > > eta;

    void computeEta();

    void integrateTangent(FloatMatrix &oTangent, Element *e, int iBndIndex, int surfSet, int pos);
};
} /* namespace oofem */