prescribed_viscosity.h

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/*
  Copyright (C) 2014 - 2024 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_material_model_prescribed_viscosity_h
#define _aspect_material_model_prescribed_viscosity_h
 
#include <aspect/material_model/interface.h>
#include <aspect/simulator_access.h>
#include <deal.II/base/parsed_function.h>
 
 
namespace aspect
{
  namespace MaterialModel
  {
    template <int dim>
    class PrescribedViscosity : public MaterialModel::Interface<dim>, public ::aspect::SimulatorAccess<dim>
    {
      public:
        void initialize() override;
 
        void update() override;
 
        void
        evaluate (const typename Interface<dim>::MaterialModelInputs &in,
                  typename Interface<dim>::MaterialModelOutputs &out) const override;
 
        static void
        declare_parameters (ParameterHandler &prm);
 
        void
        parse_parameters (ParameterHandler &prm) override;
 
        bool is_compressible () const override;
 
        void
        create_additional_named_outputs (MaterialModel::MaterialModelOutputs<dim> &out) const override;
 
      private:
 
        Functions::ParsedFunction<dim> prescribed_viscosity_indicator_function;
 
        Functions::ParsedFunction<dim> prescribed_viscosity_function;
 
        std::unique_ptr<MaterialModel::Interface<dim>> base_model;
    };
  }
}
 
#endif