diffusion_dislocation.h

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// ------------------------------------------------------
//
// SPDX-License-Identifier: GPL-2.0-or-later
//
// SPDX-FileCopyrightText: Copyright (C) 2011-2026 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_diffusion_dislocation_h
#define _aspect_material_model_rheology_diffusion_dislocation_h

#include <aspect/global.h>
#include <aspect/material_model/interface.h>
#include <aspect/material_model/utilities.h>
#include <aspect/simulator_access.h>
#include <aspect/material_model/rheology/diffusion_creep.h>
#include <aspect/material_model/rheology/dislocation_creep.h>

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

          std::vector<double>
          calculate_isostrain_viscosities ( const double pressure,
                                            const double temperature,
                                            const SymmetricTensor<2,dim> &strain_rate) const;

          double
          compute_viscosity (const double pressure,
                             const double temperature,
                             const std::vector<double> &volume_fractions,
                             const SymmetricTensor<2,dim> &strain_rate) const;

          static
          void
          declare_parameters (ParameterHandler &prm);

          void
          parse_parameters (ParameterHandler &prm);

        private:
          Rheology::DiffusionCreep<dim> diffusion_creep;
          Rheology::DislocationCreep<dim> dislocation_creep;

          double min_strain_rate;
          double minimum_viscosity;
          double maximum_viscosity;

          double log_strain_rate_residual_threshold;
          unsigned int stress_max_iteration_number;

          double grain_size;
          unsigned int n_chemical_composition_fields;

          MaterialUtilities::CompositionalAveragingOperation viscosity_averaging;

      };

    }
  }
}
#endif