main.cpp

/******************************************************************************
 * Copyright (C) Siarhei Uzunbajakau, 2023.
 *
 * This program is free software. You can use, modify, and redistribute it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation, either version 3 or (at your option) any later version.
 * This program is distributed without any warranty.
 *
 * Refer to COPYING.LESSER for more details.
 ******************************************************************************/
 
#define BOOST_ALLOW_DEPRECATED_HEADERS
 
#include <deal.II/base/multithread_info.h>
#include <deal.II/base/timer.h>
 
#include <iostream>
#include <string>
 
#include "misc.hpp"
#include "project_A_to_B.hpp"
#include "project_T_to_J.hpp"
#include "solver.hpp"
 
#include "settings.hpp"
 
using namespace Misc;
using namespace StaticVectorSolver;
 
class BatchMMSVTI : public SettingsMMSVTI
{
public:
  void run()
  {
    if (nr_threads_max > 0)
      MultithreadInfo::set_thread_limit(nr_threads_max);
 
#if DOMAIN__ == 0
    const unsigned int mapping_degree = 1;
    const std::string dir = "Data/cube/";
#endif
 
#if DOMAIN__ == 1
    const unsigned int mapping_degree = 2;
    const std::string dir = "Data/sphere/";
#endif
 
    std::cout << "Program: mss-vt-i\n"
              << "Dimensions: "
              << "3\n"
              << "Domain type: " << DOMAIN__ << "\n"
              << "Writing to: " << dir << "\n";
 
    MainOutputTable table_J(3);
    MainOutputTable table_B(3);
 
    for (unsigned int p = 0; p < 3; p++) {
      table_J.clear();
      table_B.clear();
 
      for (unsigned int r = 5; r < 9; r++) {
        table_J.add_value("r", r);
        table_J.add_value("p", p);
 
        table_B.add_value("r", r);
        table_B.add_value("p", p);
 
        // Stage 0 -------------------------------------------------------------
        std::cout << "Stage 0: solving for T ...\n";
 
        SolverMMSVTI_T stage0(p,
                              mapping_degree,
                              r,
                              dir + "solution_T_p" + std::to_string(p) + "_r" +
                                std::to_string(r));
 
        stage0.clear();
 
        // Stage 1 -------------------------------------------------------------
        std::cout << "Stage 1: projecting T in H(curl) to Jf in H(div) ...\n";
 
        ExactSolutionMMSVTI_Jf exact_solution_Jf;
 
        ProjectTtoJ stage1(p,
                           mapping_degree,
                           stage0.get_tria(),
                           stage0.get_dof_handler(),
                           stage0.get_solution(),
                           dir + "solution_J_p" + std::to_string(p) + "_r" +
                             std::to_string(r),
                           &exact_solution_Jf,
                           Settings::print_time_tables,
                           Settings::project_exact_solution,
                           Settings::log_cg_convergence,
                           true);
 
        table_J.add_value("ndofs", stage0.get_n_dofs());
        table_J.add_value("ncells", stage0.get_n_cells());
        table_J.add_value("L2", stage1.get_L2_norm());
        table_J.add_value("H1", 0.0);
 
        stage1.clear();
 
        // Stage 2 -------------------------------------------------------------
        std::cout << "Stage 2: solving for A ...\n";
 
        SolverMMSVTI_A stage2(p,
                              mapping_degree,
                              stage0.get_tria(),
                              stage0.get_dof_handler(),
                              stage0.get_solution(),
                              r,
                              dir + "solution_A_p" + std::to_string(p) + "_r" +
                                std::to_string(r));
 
        stage2.clear();
 
        // Stage 3 -------------------------------------------------------------
        std::cout << "Stage 3: projecting A in H(curl) to B in H(div) ...\n";
 
        ExactSolutionMMSVTI_B exact_solution_B;
 
        ProjectAtoB stage3(p,
                           mapping_degree,
                           stage0.get_tria(),
                           stage2.get_dof_handler(),
                           stage2.get_solution(),
                           dir + "solution_B_p" + std::to_string(p) + "_r" +
                             std::to_string(r),
                           &exact_solution_B,
                           Settings::print_time_tables,
                           Settings::project_exact_solution,
                           Settings::log_cg_convergence,
                           true);
 
        table_B.add_value("ndofs", stage0.get_n_dofs());
        table_B.add_value("ncells", stage0.get_n_cells());
        table_B.add_value("L2", stage3.get_L2_norm());
        table_B.add_value("H1", 0.0);
      }
 
      std::cout << "Table J \n";
      table_J.save(dir + "main_table_J_p" + std::to_string(p));
 
      std::cout << "Table B \n";
      table_B.save(dir + "main_table_B_p" + std::to_string(p));
    }
  }
};
 
int
main()
{
  try {
    BatchMMSVTI batch;
    batch.run();
  } catch (std::exception& exc) {
    std::cerr << std::endl
              << std::endl
              << "----------------------------------------------------"
              << std::endl;
    std::cerr << "Exception on processing: " << std::endl
              << exc.what() << std::endl
              << "Aborting!" << std::endl
              << "----------------------------------------------------"
              << std::endl;
    return 1;
  } catch (...) {
    std::cerr << std::endl
              << std::endl
              << "----------------------------------------------------"
              << std::endl;
    std::cerr << "Unknown exception!" << std::endl
              << "Aborting!" << std::endl
              << "----------------------------------------------------"
              << std::endl;
    return 1;
  }
  return 0;
}