TimeDependentEquationSystem.h

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html
 
#ifdef MOOSE_MFEM_ENABLED
 
#pragma once
 
#include "EquationSystem.h"
 
namespace Moose::MFEM
{
class TimeDependentEquationSystem : public EquationSystem
{
public:
  TimeDependentEquationSystem(const Moose::MFEM::TimeDerivativeMap & time_derivative_map);
 
  virtual void SetTimeStep(mfem::real_t & dt) { _dt = dt; };
  virtual void AddKernel(std::shared_ptr<MFEMKernel> kernel) override;
 
  virtual bool IsTimeDependent() const override { return true; }
 
protected:
  virtual void BuildBilinearForms() override;
  virtual void BuildMixedBilinearForms() override;
  virtual void BuildNonlinearForms() override;
  virtual void EliminateCoupledVariables() override;
 
  mfem::real_t _dt;
 
  Moose::MFEM::NamedFieldsMap<Moose::MFEM::NamedFieldsMap<std::vector<std::shared_ptr<MFEMKernel>>>>
      _td_kernels_map;
  Moose::MFEM::NamedFieldsMap<mfem::ParBilinearForm> _td_blfs;
  Moose::MFEM::NamedFieldsMap<Moose::MFEM::NamedFieldsMap<mfem::ParMixedBilinearForm>>
      _td_mblfs; // named according to trial variable
 
  const Moose::MFEM::TimeDerivativeMap & _time_derivative_map;
 
private:
  friend class TimeDependentEquationSystemProblemOperator;
};
 
} // namespace Moose::MFEM
 
#endif