frank_kamenetskii.h

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// ------------------------------------------------------
//
// SPDX-License-Identifier: GPL-2.0-or-later
//
// SPDX-FileCopyrightText: Copyright (C) 2020-2026 by the ASPECT authors.
//
// This file is part of ASPECT.
//
// Detailed license information governing the source code and
// contributions can be found in the folder LICENSES and in
// LICENSE and CONTRIBUTING.md at the top level directory.
//
// ------------------------------------------------------

#ifndef _aspect_material_model_rheology_frank_kamenetskii_h
#define _aspect_material_model_rheology_frank_kamenetskii_h

#include <aspect/global.h>
#include <aspect/material_model/interface.h>
#include <aspect/simulator_access.h>

namespace aspect
{
  namespace MaterialModel
  {
    namespace Rheology
    {
      template <int dim>
      class FrankKamenetskii : public ::aspect::SimulatorAccess<dim>
      {
        public:
          FrankKamenetskii();

          static
          void
          declare_parameters (ParameterHandler &prm);

          void
          parse_parameters (ParameterHandler &prm);

          double
          compute_viscosity (const double temperature,
                             const unsigned int composition,
                             const double pressure = std::numeric_limits<double>::infinity(),
                             const double density = std::numeric_limits<double>::infinity(),
                             const double gravity = std::numeric_limits<double>::infinity()) const;

        private:
          std::vector<double> viscosity_ratios_frank_kamenetskii;

          std::vector<double> prefactors_frank_kamenetskii;

          std::vector<double> pressure_prefactors_frank_kamenetskii;

          std::vector<double> reference_temperatures;
          std::vector<double> reference_pressures;
      };
    }
  }
}
#endif