radial_linear.h

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/*
  Copyright (C) 2014 - 2019 by the authors of the ASPECT code.

  This file is part of ASPECT.

  ASPECT 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, or (at your option)
  any later version.

  ASPECT 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 ASPECT; see the file LICENSE.  If not see
  <http://www.gnu.org/licenses/>.
*/


#ifndef _aspect_gravity_model_radial_linear_h
#define _aspect_gravity_model_radial_linear_h

#include <aspect/simulator_access.h>
#include <aspect/gravity_model/interface.h>

namespace aspect
{
  namespace GravityModel
  {
    template <int dim>
    class RadialLinear : public Interface<dim>, public SimulatorAccess<dim>
    {
      public:
        Tensor<1,dim> gravity_vector (const Point<dim> &position) const override;

        static
        void
        declare_parameters (ParameterHandler &prm);

        void
        parse_parameters (ParameterHandler &prm) override;

      private:
        double magnitude_at_surface;

        double magnitude_at_bottom;

    };
  }
}

#endif