#include <source/parabolic_module.h>

Inheritance diagram for ryujin::ParabolicModule< Description, dim, Number >:

Collaboration diagram for ryujin::ParabolicModule< Description, dim, Number >:

Public Types
Typedefs and constexpr constants
using	HyperbolicSystem = typename Description::HyperbolicSystem

using	View = typename Description::template HyperbolicSystemView< dim, Number >

using	ParabolicSystem = typename Description::ParabolicSystem

using	ParabolicSolver = typename Description::template ParabolicSolver< dim, Number >

using	StateVector = typename View::StateVector

Public Member Functions
Constructor and setup
	ParabolicModule (const MPIEnsemble &mpi_ensemble, std::map< std::string, dealii::Timer > &computing_timer, const OfflineData< dim, Number > &offline_data, const HyperbolicSystem &hyperbolic_system, const ParabolicSystem &parabolic_system, const InitialValues< Description, dim, Number > &initial_values, const std::string &subsection="/ParabolicModule")

void	prepare ()

Functons for performing explicit time steps
void	prepare_state_vector (StateVector &state_vector, Number t) const

template<int stages>
void	backward_euler_step (const StateVector &old_state_vector, const Number old_t, std::array< std::reference_wrapper< const StateVector >, stages > stage_state_vectors, const std::array< Number, stages > stage_weights, StateVector &new_state_vector, Number tau) const

void	crank_nicolson_step (const StateVector &old_state_vector, const Number old_t, StateVector &new_state_vector, Number tau) const

void	print_solver_statistics (std::ostream &output) const

Accessors
IDViolationStrategy	id_violation_strategy_

const auto &	n_restarts () const

const auto &	n_corrections () const

const auto &	n_warnings () const

Detailed Description

template<typename Description, int dim, typename Number = double>
class ryujin::ParabolicModule< Description, dim, Number >

Implicit backward Euler time-stepping and Crank-Nicolson time-stepping for the parabolic subsystem.

Definition at line 33 of file parabolic_module.h.

Member Typedef Documentation

◆ HyperbolicSystem

template<typename Description , int dim, typename Number = double>

using ryujin::ParabolicModule< Description, dim, Number >::HyperbolicSystem = typename Description::HyperbolicSystem

Definition at line 41 of file parabolic_module.h.

◆ View

template<typename Description , int dim, typename Number = double>

using ryujin::ParabolicModule< Description, dim, Number >::View = typename Description::template HyperbolicSystemView<dim, Number>

Definition at line 43 of file parabolic_module.h.

◆ ParabolicSystem

template<typename Description , int dim, typename Number = double>

using ryujin::ParabolicModule< Description, dim, Number >::ParabolicSystem = typename Description::ParabolicSystem

Definition at line 46 of file parabolic_module.h.

◆ ParabolicSolver

template<typename Description , int dim, typename Number = double>

using ryujin::ParabolicModule< Description, dim, Number >::ParabolicSolver = typename Description::template ParabolicSolver<dim, Number>

Definition at line 48 of file parabolic_module.h.

◆ StateVector

template<typename Description , int dim, typename Number = double>

using ryujin::ParabolicModule< Description, dim, Number >::StateVector = typename View::StateVector

Definition at line 51 of file parabolic_module.h.

Constructor & Destructor Documentation

◆ ParabolicModule()

template<typename Description , int dim, typename Number >

ryujin::ParabolicModule< Description, dim, Number >::ParabolicModule	(	const MPIEnsemble &	mpi_ensemble,
		std::map< std::string, dealii::Timer > &	computing_timer,
		const OfflineData< dim, Number > &	offline_data,
		const HyperbolicSystem &	hyperbolic_system,
		const ParabolicSystem &	parabolic_system,
		const InitialValues< Description, dim, Number > &	initial_values,
		const std::string &	subsection = `"/ParabolicModule< Description, dim, Number >"`
	)

Constructor.

Definition at line 15 of file parabolic_module.template.h.

References ryujin::warn.

Member Function Documentation

◆ prepare()

template<typename Description , int dim, typename Number >

void ryujin::ParabolicModule< Description, dim, Number >::prepare

Prepare time stepping. A call to prepare() allocates temporary storage and is necessary before any of the following time-stepping functions can be called.

Definition at line 40 of file parabolic_module.template.h.

◆ prepare_state_vector()

template<typename Description , int dim, typename Number >

void ryujin::ParabolicModule< Description, dim, Number >::prepare_state_vector	(	StateVector &	state_vector,
		Number	t
	)		const

This function preprocesses a given state vector U in preparation for a high order IMEX time step. This function exists because some time stepping variants have to precompute quantities before we can perform an IMEX step. In addition, this function is called whenever we perform a mesh transfer or output operation.

Definition at line 54 of file parabolic_module.template.h.

◆ backward_euler_step()

template<typename Description , int dim, typename Number >

template<int stages>

void ryujin::ParabolicModule< Description, dim, Number >::backward_euler_step	(	const StateVector &	old_state_vector,
		const Number	old_t,
		std::array< std::reference_wrapper< const StateVector >, stages >	stage_state_vectors,
		const std::array< Number, stages >	stage_weights,
		StateVector &	new_state_vector,
		Number	tau
	)		const

Given a reference to a previous state vector old_U at time old_t and a time-step size tau perform an implicit backward euler step (and store the result in new_U).

The function takes an optional array of states stage_U together with a an array of weights stage_weights to construct a modified high-order right-hand side / flux.

Definition at line 78 of file parabolic_module.template.h.

◆ crank_nicolson_step()

template<typename Description , int dim, typename Number >

void ryujin::ParabolicModule< Description, dim, Number >::crank_nicolson_step	(	const StateVector &	old_state_vector,
		const Number	old_t,
		StateVector &	new_state_vector,
		Number	tau
	)		const

Given a reference to a previous state vector old_U at time old_t and a time-step size tau perform an implicit Crank-Nicolson step (and store the result in new_U).

This variant is used in the TimeIntegrator class for the Strang split variants.

Definition at line 117 of file parabolic_module.template.h.

◆ print_solver_statistics()

template<typename Description , int dim, typename Number >

void ryujin::ParabolicModule< Description, dim, Number >::print_solver_statistics ( std::ostream & output ) const

Print a status line with solver statistics. This function is used for constructing the status message displayed periodically in the TimeLoop.

Definition at line 149 of file parabolic_module.template.h.

◆ n_restarts()

template<typename Description , int dim, typename Number = double>

const auto & ryujin::ParabolicModule< Description, dim, Number >::n_restarts ( ) const

inline

The number of restarts signalled by the step() function.

Definition at line 140 of file parabolic_module.h.

◆ n_corrections()

template<typename Description , int dim, typename Number = double>

const auto & ryujin::ParabolicModule< Description, dim, Number >::n_corrections ( ) const

inline

The number of corrections performed by the step() function. This function exists to mirror the ParabolicModule interface and will always return 0.

Definition at line 148 of file parabolic_module.h.

◆ n_warnings()

template<typename Description , int dim, typename Number = double>

const auto & ryujin::ParabolicModule< Description, dim, Number >::n_warnings ( ) const

inline

The number of ID violation warnings encounterd in the step() function.

Definition at line 154 of file parabolic_module.h.

Member Data Documentation

◆ id_violation_strategy_

template<typename Description , int dim, typename Number = double>

IDViolationStrategy ryujin::ParabolicModule< Description, dim, Number >::id_violation_strategy_

mutable

Definition at line 157 of file parabolic_module.h.

The documentation for this class was generated from the following files:

source/parabolic_module.h
source/parabolic_module.template.h

Public Types

Public Member Functions

Accessors

Detailed Description

Member Typedef Documentation

◆ HyperbolicSystem

◆ View

◆ ParabolicSystem

◆ ParabolicSolver

◆ StateVector

Constructor & Destructor Documentation

◆ ParabolicModule()

Member Function Documentation

◆ prepare()

◆ prepare_state_vector()

◆ backward_euler_step()

◆ crank_nicolson_step()

◆ print_solver_statistics()

◆ n_restarts()

◆ n_corrections()

◆ n_warnings()

Member Data Documentation

◆ id_violation_strategy_