fluiddynamicmaterial.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 fluiddynamicmaterial_h
#define fluiddynamicmaterial_h
 
#include "material.h"
#include "matstatus.h"
#include "floatarray.h"
#include "floatarrayf.h"
#include "floatmatrixf.h"
 
namespace oofem {
class FluidDynamicMaterialStatus : public MaterialStatus
{
protected:
    FloatArrayF<6> deviatoricStressVector;
    FloatArrayF<6> deviatoricStrainRateVector;
 
public:
    FluidDynamicMaterialStatus(GaussPoint * g);
 
    void printOutputAt(FILE *file, TimeStep *tStep) const override;
 
    void saveContext(DataStream &stream, ContextMode mode) override;
    void restoreContext(DataStream &stream, ContextMode mode) override;

    const FloatArrayF<6> &giveDeviatoricStressVector() const { return deviatoricStressVector; }
    const FloatArrayF<6> &giveDeviatoricStrainRateVector() const { return deviatoricStrainRateVector; }
    void letDeviatoricStressVectorBe(const FloatArrayF<6> &v) { deviatoricStressVector = v; }
    void letDeviatoricStrainRateVectorBe(const FloatArrayF<6> &v) { deviatoricStrainRateVector = v; }
 
    const char *giveClassName() const override { return "FluidDynamicMaterialStatus"; }
};
 

class FluidDynamicMaterial : public Material
{
public:
    template<int N> struct Tangents {
        FloatMatrixF<N,N> dsdd;
        FloatArrayF<N> dsdp;
        FloatArrayF<N> dedd;
        double dedp;
    };

    FluidDynamicMaterial(int n, Domain * d) : Material(n, d) { }

    virtual std::pair<FloatArrayF<6>, double> computeDeviatoricStress3D(const FloatArrayF<6> &eps, double pressure,
                                                                        GaussPoint *gp, TimeStep *tStep) const;
    virtual std::pair<FloatArrayF<3>, double> computeDeviatoricStress2D(const FloatArrayF<3> &eps, double pressure,
                                                                        GaussPoint *gp, TimeStep *tStep) const;
    virtual FloatArrayF<6> computeDeviatoricStress3D(const FloatArrayF<6> &eps, GaussPoint *gp, TimeStep *tStep) const = 0;
    virtual FloatArrayF<3> computeDeviatoricStress2D(const FloatArrayF<3> &eps, GaussPoint *gp, TimeStep *tStep) const;
    virtual FloatArrayF<4> computeDeviatoricStressAxi(const FloatArrayF<4> &eps, GaussPoint *gp, TimeStep *tStep) const;

    virtual FloatMatrixF<6,6> computeTangent3D(MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const = 0;
    virtual FloatMatrixF<3,3> computeTangent2D(MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const;
    virtual FloatMatrixF<4,4> computeTangentAxi(MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const;

    virtual Tangents<6> computeTangents3D(MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const;
    virtual Tangents<3> computeTangents2D(MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const;

    virtual double giveEffectiveViscosity(GaussPoint *gp, TimeStep *tStep) const = 0;
 
    int giveIPValue(FloatArray &answer, GaussPoint *gp, InternalStateType type, TimeStep *tStep) override;
};
} // end namespace oofem
#endif // fluiddynamicmaterial_h