structure.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 INCLUDE_EXADG_FLUID_STRUCTURE_INTERACTION_SINGLE_FIELD_SOLVERS_STRUCTURE_H_
#define INCLUDE_EXADG_FLUID_STRUCTURE_INTERACTION_SINGLE_FIELD_SOLVERS_STRUCTURE_H_
 
// Structure
#include <exadg/structure/spatial_discretization/operator.h>
#include <exadg/structure/time_integration/time_int_gen_alpha.h>
 
// application
#include <exadg/fluid_structure_interaction/user_interface/application_base.h>
 
namespace ExaDG
{
namespace FSI
{
template<int dim, typename Number>
class SolverStructure
{
public:
  void
  setup(std::shared_ptr<StructureFSI::ApplicationBase<dim, Number>> application,
        MPI_Comm const                                              mpi_comm,
        bool const                                                  is_test);
 
  // grid and mapping
  std::shared_ptr<Grid<dim>>            grid;
  std::shared_ptr<dealii::Mapping<dim>> mapping;
 
  std::shared_ptr<MultigridMappings<dim, Number>> multigrid_mappings;
 
  // matrix-free
  std::shared_ptr<MatrixFreeData<dim, Number>>     matrix_free_data;
  std::shared_ptr<dealii::MatrixFree<dim, Number>> matrix_free;
 
  // spatial discretization
  std::shared_ptr<Structure::Operator<dim, Number>> pde_operator;
 
  // temporal discretization
  std::shared_ptr<Structure::TimeIntGenAlpha<dim, Number>> time_integrator;
 
  // postprocessor
  std::shared_ptr<Structure::PostProcessor<dim, Number>> postprocessor;
};
 
template<int dim, typename Number>
void
SolverStructure<dim, Number>::setup(
  std::shared_ptr<StructureFSI::ApplicationBase<dim, Number>> application,
  MPI_Comm const                                              mpi_comm,
  bool const                                                  is_test)
{
  // setup application
  application->setup(grid, mapping, multigrid_mappings);
 
  // setup spatial operator
  pde_operator =
    std::make_shared<Structure::Operator<dim, Number>>(grid,
                                                       mapping,
                                                       multigrid_mappings,
                                                       application->get_boundary_descriptor(),
                                                       application->get_field_functions(),
                                                       application->get_material_descriptor(),
                                                       application->get_parameters(),
                                                       "elasticity",
                                                       mpi_comm);
 
  // initialize matrix_free
  matrix_free_data = std::make_shared<MatrixFreeData<dim, Number>>();
  matrix_free_data->append(pde_operator);
 
  matrix_free = std::make_shared<dealii::MatrixFree<dim, Number>>();
  matrix_free->reinit(*mapping,
                      matrix_free_data->get_dof_handler_vector(),
                      matrix_free_data->get_constraint_vector(),
                      matrix_free_data->get_quadrature_vector(),
                      matrix_free_data->data);
 
  pde_operator->setup(matrix_free, matrix_free_data);
 
  // initialize postprocessor
  postprocessor = application->create_postprocessor();
  postprocessor->setup(pde_operator->get_dof_handler(), *mapping);
 
  // initialize time integrator
  time_integrator = std::make_shared<Structure::TimeIntGenAlpha<dim, Number>>(
    pde_operator, postprocessor, application->get_parameters(), mpi_comm, is_test);
 
  time_integrator->setup(application->get_parameters().restarted_simulation);
}
 
} // namespace FSI
} // namespace ExaDG
 
#endif /* INCLUDE_EXADG_FLUID_STRUCTURE_INTERACTION_SINGLE_FIELD_SOLVERS_STRUCTURE_H_ */