melt_global.h

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// ------------------------------------------------------
//
// SPDX-License-Identifier: GPL-2.0-or-later
//
// SPDX-FileCopyrightText: Copyright (C) 2015-2026 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_melt_global_h
#define _aspect_material_model_melt_global_h

#include <aspect/material_model/interface.h>
#include <aspect/simulator_access.h>
#include <aspect/postprocess/melt_statistics.h>
#include <aspect/melt.h>

namespace aspect
{
  namespace MaterialModel
  {
    template <int dim>
    class MeltGlobal : public MaterialModel::MeltInterface<dim>,
      public MaterialModel::MeltFractionModel<dim>,
      public ::aspect::SimulatorAccess<dim>
    {
      public:
        bool is_compressible () const override;

        void evaluate(const typename Interface<dim>::MaterialModelInputs &in,
                      typename Interface<dim>::MaterialModelOutputs &out) const override;

        void melt_fractions (const MaterialModel::MaterialModelInputs<dim> &in,
                             std::vector<double> &melt_fractions,
                             const MaterialModel::MaterialModelOutputs<dim> *out = nullptr) const override;

        double reference_darcy_coefficient () const override;


        static
        void
        declare_parameters (ParameterHandler &prm);

        void
        parse_parameters (ParameterHandler &prm) override;
        void
        create_additional_named_outputs (MaterialModel::MaterialModelOutputs<dim> &out) const override;


      private:
        double reference_rho_s;
        double reference_rho_f;
        double reference_T;
        double eta_0;
        double xi_0;
        double eta_f;
        double thermal_viscosity_exponent;
        double thermal_bulk_viscosity_exponent;
        double thermal_expansivity;
        double reference_specific_heat;
        double thermal_conductivity;
        double reference_permeability;
        double alpha_phi;
        double depletion_density_change;
        double depletion_solidus_change;
        double pressure_solidus_change;
        double surface_solidus;
        double compressibility;
        double melt_compressibility;
        bool include_melting_and_freezing;
        double melting_time_scale;
        double alpha_depletion;
        double delta_eta_depletion_max;

        // entropy change upon melting
        double peridotite_melting_entropy_change;

        virtual
        double
        melt_fraction (const double temperature,
                       const double pressure,
                       const double depletion) const;
    };

  }
}

#endif