gradUExactFunctor.hpp

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/* -*- mode: c++ -*-
 
 This file is part of the LifeV Applications.
 
 Author(s): Christophe Prud'homme <christophe.prudhomme@epfl.ch>
 Gwenol Grandperrin <gwenol.grandperrin@epfl.ch>
 Date: 2011-03-09
 
 Copyright (C) 2010 EPFL
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU 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
 General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 USA
 */
/*!
 @file gradUExactFunctor.hpp
 @author Davide Forti <davide.forti@epfl.ch>
 @contributor Claudia Colciago <claudia.colciago@epfl.ch>
 @date 2014-01-31
 */

#ifndef GRADUEXACTFUNCTOR_H
#define GRADUEXACTFUNCTOR_H 1

#include <lifev/core/LifeV.hpp>
#include <lifev/navier_stokes/function/RossEthierSteinmanDec.hpp>

namespace LifeV
{

class gradUExactFunctor
{
public:
    typedef MatrixSmall<3,3> return_Type;

    return_Type operator() ( const Real time, const VectorSmall<3> spaceCoordinates )
    {
        MatrixSmall<3,3> gradU;
        gradU[0][0] = RossEthierSteinmanUnsteadyDec::grad_u( 0, time, spaceCoordinates[0], spaceCoordinates[1], spaceCoordinates[2] , 0  ) ;
        gradU[1][1] = RossEthierSteinmanUnsteadyDec::grad_u( 1, time, spaceCoordinates[0], spaceCoordinates[1], spaceCoordinates[2] , 1  ) ;
        gradU[2][2] = RossEthierSteinmanUnsteadyDec::grad_u( 2, time, spaceCoordinates[0], spaceCoordinates[1], spaceCoordinates[2] , 2  ) ;
        gradU[0][1] = RossEthierSteinmanUnsteadyDec::grad_u( 1, time, spaceCoordinates[0], spaceCoordinates[1], spaceCoordinates[2] , 0  ) ;
        gradU[0][2] = RossEthierSteinmanUnsteadyDec::grad_u( 2, time, spaceCoordinates[0], spaceCoordinates[1], spaceCoordinates[2] , 0  ) ;
        gradU[1][0] = RossEthierSteinmanUnsteadyDec::grad_u( 0, time, spaceCoordinates[0], spaceCoordinates[1], spaceCoordinates[2] , 1  ) ;
        gradU[1][2] = RossEthierSteinmanUnsteadyDec::grad_u( 2, time, spaceCoordinates[0], spaceCoordinates[1], spaceCoordinates[2] , 1  ) ;
        gradU[2][0] = RossEthierSteinmanUnsteadyDec::grad_u( 0, time, spaceCoordinates[0], spaceCoordinates[1], spaceCoordinates[2] , 2  ) ;
        gradU[2][1] = RossEthierSteinmanUnsteadyDec::grad_u( 1, time, spaceCoordinates[0], spaceCoordinates[1], spaceCoordinates[2] , 2  ) ;


        return gradU;
    }

    gradUExactFunctor() {}
    gradUExactFunctor (const gradUExactFunctor&) {}
    ~gradUExactFunctor() {}
};

} // end namespace LifeV

#endif // GRADUEXACTFUNCTOR_H