melt_fraction.h

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// ------------------------------------------------------
//
// SPDX-License-Identifier: GPL-2.0-or-later
//
// SPDX-FileCopyrightText: Copyright (C) 2013-2026 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_postprocess_visualization_melt_fraction_h
#define _aspect_postprocess_visualization_melt_fraction_h

#include <aspect/postprocess/visualization.h>
#include <aspect/simulator_access.h>

#include <deal.II/numerics/data_postprocessor.h>


namespace aspect
{
  namespace Postprocess
  {
    namespace VisualizationPostprocessors
    {
      template <int dim>
      class MeltFraction
        : public DataPostprocessorScalar<dim>,
          public SimulatorAccess<dim>,
          public Interface<dim>
      {
        public:
          MeltFraction ();

          double
          melt_fraction (const double temperature,
                         const double pressure,
                         const std::string &melting_model) const;

          void
          evaluate_vector_field(const DataPostprocessorInputs::Vector<dim> &input_data,
                                std::vector<Vector<double>> &computed_quantities) const override;

          static
          void
          declare_parameters (ParameterHandler &prm);

          void
          parse_parameters (ParameterHandler &prm) override;

        private:
          // for the solidus temperature
          double A1;   // °C
          double A2; // °C/Pa
          double A3; // °C/(Pa^2)

          // for the lherzolite liquidus temperature
          double B1;   // °C
          double B2;   // °C/Pa
          double B3; // °C/(Pa^2)

          // for the liquidus temperature
          double C1;   // °C
          double C2;  // °C/Pa
          double C3; // °C/(Pa^2)

          // for the reaction coefficient of pyroxene
          double r1;     // cpx/melt
          double r2;     // cpx/melt/GPa
          double M_cpx;  // mass fraction of pyroxenite

          // melt fraction exponent
          double beta;

          // for the melting temperature
          double D1;    // °C
          double D2;  // °C/Pa
          double D3; // °C/(Pa^2)

          // for the melt-fraction dependence of productivity
          double E1;
          double E2;

          std::vector<std::string> melting_model;
      };
    }
  }
}

#endif