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_Axy_to_Bz.hpp"
#include "settings.hpp"
#include "solver.hpp"
 
using namespace Misc;
using namespace StaticVectorSolver;
 
class BatchMMSV : public SettingsMMSV
{
public:
  void run()
  {
    if (nr_threads_max > 0)
      MultithreadInfo::set_thread_limit(nr_threads_max);
 
    Assert(DIMENSION__ < 4, ExcInternalError());
    Assert(DIMENSION__ > 1, ExcInternalError());
 
    std::string dir;
    std::string fname;
 
    unsigned int mapping_degree;
 
    if (HYPERCUBE__ == 1) {
      dir = (DIMENSION__ == 2) ? "Data/square/" : "Data/cube/";
      mapping_degree = 1;
    } else {
      dir = (DIMENSION__ == 2) ? "Data/circle/" : "Data/sphere/";
      mapping_degree = 2;
    }
 
    std::cout << "Program: mms-v\n"
              << "Dimensions: " << DIMENSION__ << "\n"
              << "Writing to: " << dir << "\n";
 
    MainOutputTable table(DIMENSION__);
 
    ExactSolutionMMSV_B<DIMENSION__> exact_solution;
 
    for (unsigned int p = 0; p < 3; p++) {
      table.clear();
      for (unsigned int r = 5; r < 9; r++) {
        std::cout << "Solving for A ...\n";
 
        fname =
          dir + "solution_A_p" + std::to_string(p) + "_r" + std::to_string(r);
 
        table.add_value("r", r);
        table.add_value("p", p);
 
        SolverMMSV<DIMENSION__> problem(p, mapping_degree, r, fname);
 
        std::cout << "Projecting A in H(curl) to B in H(div) ...\n";
 
#if DIMENSION__ == 3
        fname =
          dir + "solution_B_p" + std::to_string(p) + "_r" + std::to_string(r);
 
        ProjectAtoB projector(p,
                              mapping_degree,
                              problem.get_tria(),
                              problem.get_dof_handler(),
                              problem.get_solution(),
                              fname,
                              &exact_solution,
                              Settings::print_time_tables,
                              Settings::project_exact_solution,
                              Settings::log_cg_convergence,
                              true);
#endif
#if DIMENSION__ == 2
        fname =
          dir + "solution_B_p" + std::to_string(p) + "_r" + std::to_string(r);
 
        ProjectAxyToBz projector(p,
                                 mapping_degree,
                                 problem.get_tria(),
                                 problem.get_dof_handler(),
                                 problem.get_solution(),
                                 fname,
                                 &exact_solution,
                                 Settings::print_time_tables,
                                 Settings::project_exact_solution,
                                 Settings::log_cg_convergence,
                                 true);
#endif
        table.add_value("ndofs", problem.get_n_dofs());
        table.add_value("ncells", problem.get_n_cells());
        table.add_value("L2", projector.get_L2_norm());
        table.add_value("H1", 0.0);
      }
      table.save(dir + "main_table_p" + std::to_string(p));
    }
  }
};
 
int
main()
{
  try {
    BatchMMSV 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;
}