create_time_integrator.h

/*  ______________________________________________________________________
 *
 *  ExaDG - High-Order Discontinuous Galerkin for the Exa-Scale
 *
 *  Copyright (C) 2021 by the ExaDG authors
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program. If not, see <https://www.gnu.org/licenses/>.
 *  ______________________________________________________________________
 */
 
#ifndef EXADG_CONVECTION_DIFFUSION_TIME_INTEGRATION_CREATE_TIME_INTEGRATOR_H_
#define EXADG_CONVECTION_DIFFUSION_TIME_INTEGRATION_CREATE_TIME_INTEGRATOR_H_
 
// ExaDG
#include <exadg/convection_diffusion/time_integration/time_int_bdf.h>
#include <exadg/convection_diffusion/time_integration/time_int_explicit_runge_kutta.h>
#include <exadg/convection_diffusion/user_interface/parameters.h>
 
namespace ExaDG
{
namespace ConvDiff
{
template<int dim, typename Number>
std::shared_ptr<TimeIntBase>
create_time_integrator(std::shared_ptr<Operator<dim, Number>>          pde_operator,
                       std::shared_ptr<HelpersALE<dim, Number> const>  helpers_ale,
                       std::shared_ptr<PostProcessorInterface<Number>> postprocessor,
                       Parameters const &                              parameters,
                       MPI_Comm const &                                mpi_comm,
                       bool const                                      is_test)
{
  std::shared_ptr<TimeIntBase> time_integrator;
 
  if(parameters.temporal_discretization == TemporalDiscretization::ExplRK)
  {
    time_integrator = std::make_shared<TimeIntExplRK<Number>>(
      pde_operator, postprocessor, parameters, mpi_comm, is_test);
  }
  else if(parameters.temporal_discretization == TemporalDiscretization::BDF)
  {
    time_integrator = std::make_shared<TimeIntBDF<dim, Number>>(
      pde_operator, helpers_ale, postprocessor, parameters, mpi_comm, is_test);
  }
  else
  {
    AssertThrow(parameters.temporal_discretization == TemporalDiscretization::ExplRK or
                  parameters.temporal_discretization == TemporalDiscretization::BDF,
                dealii::ExcMessage("Specified time integration scheme is not implemented!"));
  }
 
  return time_integrator;
}
 
} // namespace ConvDiff
} // namespace ExaDG
 
#endif /* EXADG_CONVECTION_DIFFUSION_TIME_INTEGRATION_CREATE_TIME_INTEGRATOR_H_ */