#include <RK12TimeIntegrator.h>

Inheritance diagram for AMP::TimeIntegrator::RK12TimeIntegrator:

Public Types
typedef std::shared_ptr< AMP::TimeIntegrator::TimeIntegrator >	shared_ptr
	Convience typedef.

Public Member Functions
int	advanceSolution (const double dt, const bool first_step, std::shared_ptr< AMP::LinearAlgebra::Vector > in, std::shared_ptr< AMP::LinearAlgebra::Vector > out) override
	Integrate through the specified time increment.

virtual void	appendRhsVector (AMP::LinearAlgebra::Vector::shared_ptr vec)
	Append the vectors of interest to the rhs vector.

virtual void	appendSolutionVector (AMP::LinearAlgebra::Vector::shared_ptr vec)
	Append the vectors of interest to the solution vector.

bool	checkNewSolution (void) override

virtual double	getCurrentDt () const
	Return current timestep.

virtual double	getCurrentTime () const
	Return final integration time.

virtual double	getFinalTime () const
	Return final integration time.

virtual double	getGamma (void)

uint64_t	getID () const
	Get a unique id hash for the vector.

virtual double	getInitialDt ()

virtual double	getInitialTime () const
	Return initial integration time.

virtual int	getIntegratorStep () const
	Return current integration step number.

virtual int	getMaxIntegratorSteps () const
	Return maximum number of integration steps.

double	getNextDt (const bool good_solution) override

std::shared_ptr< AMP::Operator::Operator >	getOperator (void)

virtual std::shared_ptr< AMP::LinearAlgebra::Vector >	getSolution (void)

virtual AMP::LinearAlgebra::Vector::shared_ptr	getSourceTerm (void)

virtual std::vector< double >	getTimeHistoryScalings (void)
	Scaling factors for previous time history vectors.

virtual int	getTotalRejectedSteps () const

void	initialize (std::shared_ptr< AMP::TimeIntegrator::TimeIntegratorParameters > parameters) override

virtual void	initialize (std::shared_ptr< TimeIntegratorParameters > parameters)
	Initialize state of time integrator.

void	printClassData (std::ostream &os) const

virtual void	printStatistics (std::ostream &os=AMP::pout)

void	putToDatabase (std::shared_ptr< AMP::Database > db)

void	registerChildObjects (AMP::IO::RestartManager *manager) const override
	Register any child objects.

virtual void	registerOperator (std::shared_ptr< AMP::Operator::Operator > op)

virtual void	registerWriter (std::shared_ptr< AMP::IO::Writer > writer)
	Registers a writer with the solver.

void	reset (std::shared_ptr< const AMP::TimeIntegrator::TimeIntegratorParameters > parameters) override

virtual void	reset (std::shared_ptr< const TimeIntegratorParameters > parameters)=0
	Resets the internal state of the time integrator.

	RK12TimeIntegrator (int64_t fid, AMP::IO::RestartManager *manager)
	Read restart data to file.

	RK12TimeIntegrator (std::shared_ptr< AMP::TimeIntegrator::TimeIntegratorParameters > parameters)

virtual void	setCurrentDt (const double dt)

virtual void	setCurrentTime (const double t)

virtual void	setFinalTime (const double t)

virtual void	setInitialDt (const double dt)

virtual void	setInitialTime (const double t)

virtual void	setSourceTerm (AMP::LinearAlgebra::Vector::shared_ptr src)

virtual size_t	sizeOfTimeHistory () const

virtual bool	stepsRemaining () const
	Have the number of integration steps reached the maximum.

std::string	type () const override
	Return the name of the TimeIntegrator.

void	updateSolution (void) override

void	writeRestart (int64_t fid) const override
	Write restart data to file.

	~RK12TimeIntegrator ()

Static Public Member Functions
static std::unique_ptr< AMP::TimeIntegrator::TimeIntegrator >	createTimeIntegrator (std::shared_ptr< AMP::TimeIntegrator::TimeIntegratorParameters > parameters)

Protected Member Functions
void	getFromRestart ()

Protected Attributes
double	d_current_dt = std::numeric_limits<double>::signaling_NaN()

double	d_current_time = std::numeric_limits<double>::signaling_NaN()

double	d_final_time = std::numeric_limits<double>::signaling_NaN()

std::shared_ptr< AMP::LinearAlgebra::Vector >	d_ic_vector = nullptr

int	d_iDebugPrintInfoLevel = 0

double	d_initial_dt = std::numeric_limits<double>::signaling_NaN()
	initial time increment

double	d_initial_time = std::numeric_limits<double>::signaling_NaN()

bool	d_initialized = false

int	d_integrator_step = 0

double	d_max_dt = std::numeric_limits<double>::max()
	maximum allowable timestep (user defined)

int	d_max_integrator_steps = 0

double	d_min_dt = std::numeric_limits<double>::signaling_NaN()

std::string	d_object_name

double	d_old_dt = std::numeric_limits<double>::signaling_NaN()

std::shared_ptr< AMP::Operator::Operator >	d_operator

std::shared_ptr< AMP::Operator::Operator >	d_pMassOperator

std::shared_ptr< TimeIntegratorParameters >	d_pParameters

std::shared_ptr< AMP::LinearAlgebra::Vector >	d_pSourceTerm

std::shared_ptr< AMP::LinearAlgebra::Vector >	d_solution_vector

int	d_total_steprejects = 0

std::shared_ptr< AMP::IO::Writer >	d_writer
	keeps track of total number of step rejections

Private Member Functions
void	getFromInput (std::shared_ptr< AMP::Database > input_db)

	RK12TimeIntegrator ()

void	setupVectors (void)

Private Attributes
double	d_atol = 0.0

std::shared_ptr< AMP::LinearAlgebra::Vector >	d_k1_vec

std::shared_ptr< AMP::LinearAlgebra::Vector >	d_k2_vec

std::shared_ptr< AMP::LinearAlgebra::Vector >	d_new_solution

int	d_number_regrid_states = 0

double	d_safety_factor = 0.0

bool	d_use_fixed_dt = false

std::shared_ptr< AMP::LinearAlgebra::Vector >	d_z_vec

Detailed Description

Class RK12TimeIntegrator is a concrete time integrator that implements the explicit adaptive Runge-Kutta obtained by combining Heun's method and Euler

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Definition at line 34 of file RK12TimeIntegrator.h.

Member Typedef Documentation

◆ shared_ptr

typedef std::shared_ptr<AMP::TimeIntegrator::TimeIntegrator> AMP::TimeIntegrator::TimeIntegrator::shared_ptr

inherited

Convience typedef.

Definition at line 37 of file TimeIntegrator.h.

Constructor & Destructor Documentation

◆ RK12TimeIntegrator() [1/3]

AMP::TimeIntegrator::RK12TimeIntegrator::RK12TimeIntegrator ( std::shared_ptr< AMP::TimeIntegrator::TimeIntegratorParameters > parameters )

explicit

Constructor that accepts parameter list.

◆ ~RK12TimeIntegrator()

AMP::TimeIntegrator::RK12TimeIntegrator::~RK12TimeIntegrator ( )

Destructor.

◆ RK12TimeIntegrator() [2/3]

AMP::TimeIntegrator::RK12TimeIntegrator::RK12TimeIntegrator	(	int64_t	fid,
		AMP::IO::RestartManager *	manager
	)

Read restart data to file.

This function will create a variable from the restart file

Parameters

fid	File identifier to write
manager	Restart manager

◆ RK12TimeIntegrator() [3/3]

AMP::TimeIntegrator::RK12TimeIntegrator::RK12TimeIntegrator ( )

private

Constructor.

Referenced by createTimeIntegrator().

Member Function Documentation

◆ advanceSolution()

int AMP::TimeIntegrator::RK12TimeIntegrator::advanceSolution	(	const double	dt,
		const bool	first_step,
		std::shared_ptr< AMP::LinearAlgebra::Vector >	in,
		std::shared_ptr< AMP::LinearAlgebra::Vector >	out
	)

overridevirtual

Integrate through the specified time increment.

The boolean first_step argument is true when this is the very first call to the advance function. Otherwise it is false. Note that, when the argument is true, the use of extrapolation to construct the initial guess for the advanced solution may not be possible.

This function may, or may not, copy the new solution into the solution vector at the previous time step (updateSolution). If it is copied, this can reduce the memory requirements, but restricts the implementation to those functions that will not be called multiple times within a time step. If it is not copied, the update solution function must be called after each time step. The concrete implementation needs to make this clear.

Parameters

dt	Time step size
first_step	Whether this is the first step
in	Input vector
out	Output vector

Returns: value is the return code generated by the particular solver package in use

Implements AMP::TimeIntegrator::TimeIntegrator.

◆ appendRhsVector()

virtual void AMP::TimeIntegrator::TimeIntegrator::appendRhsVector ( AMP::LinearAlgebra::Vector::shared_ptr vec )

inlinevirtualinherited

Append the vectors of interest to the rhs vector.

This function will append the necessary vectors that this solver owns to the global vector provided. Note that each solver may own any number of vectors, but no vector may be owned by multiple solvers.

Parameters

vec	The vector to append

Definition at line 219 of file TimeIntegrator.h.

◆ appendSolutionVector()

virtual void AMP::TimeIntegrator::TimeIntegrator::appendSolutionVector ( AMP::LinearAlgebra::Vector::shared_ptr vec )

inlinevirtualinherited

Append the vectors of interest to the solution vector.

This function will append the necessary vectors that this solver owns to the global vector provided. Note that each solver may own any number of vectors, but no vector may be owned by multiple solvers.

Parameters

vec	The vector to append

Definition at line 208 of file TimeIntegrator.h.

◆ checkNewSolution()

bool AMP::TimeIntegrator::RK12TimeIntegrator::checkNewSolution ( void )

overridevirtual

Determine whether time advanced solution is satisfactory.

Implements AMP::TimeIntegrator::TimeIntegrator.

◆ createTimeIntegrator()

static std::unique_ptr< AMP::TimeIntegrator::TimeIntegrator > AMP::TimeIntegrator::RK12TimeIntegrator::createTimeIntegrator ( std::shared_ptr< AMP::TimeIntegrator::TimeIntegratorParameters > parameters )

inlinestatic

Definition at line 48 of file RK12TimeIntegrator.h.

References RK12TimeIntegrator().

◆ getCurrentDt()

virtual double AMP::TimeIntegrator::TimeIntegrator::getCurrentDt ( ) const

virtualinherited

Return current timestep.

◆ getCurrentTime()

virtual double AMP::TimeIntegrator::TimeIntegrator::getCurrentTime ( ) const

virtualinherited

Return final integration time.

Return current integration time.

◆ getFinalTime()

virtual double AMP::TimeIntegrator::TimeIntegrator::getFinalTime ( ) const

virtualinherited

Return final integration time.

◆ getFromInput()

void AMP::TimeIntegrator::RK12TimeIntegrator::getFromInput ( std::shared_ptr< AMP::Database > input_db )

private

Read data from input database.

◆ getFromRestart()

void AMP::TimeIntegrator::TimeIntegrator::getFromRestart ( )

protectedinherited

◆ getGamma()

virtual double AMP::TimeIntegrator::TimeIntegrator::getGamma ( void )

inlinevirtualinherited

Reimplemented in AMP::TimeIntegrator::BDFIntegrator.

Definition at line 268 of file TimeIntegrator.h.

References AMP::TimeIntegrator::TimeIntegrator::d_current_dt.

◆ getID()

uint64_t AMP::TimeIntegrator::TimeIntegrator::getID ( ) const

inherited

Get a unique id hash for the vector.

◆ getInitialDt()

virtual double AMP::TimeIntegrator::TimeIntegrator::getInitialDt ( )

inlinevirtualinherited

get initial time step.

Definition at line 179 of file TimeIntegrator.h.

References AMP::TimeIntegrator::TimeIntegrator::d_initial_dt.

◆ getInitialTime()

virtual double AMP::TimeIntegrator::TimeIntegrator::getInitialTime ( ) const

virtualinherited

Return initial integration time.

◆ getIntegratorStep()

virtual int AMP::TimeIntegrator::TimeIntegrator::getIntegratorStep ( ) const

virtualinherited

Return current integration step number.

◆ getMaxIntegratorSteps()

virtual int AMP::TimeIntegrator::TimeIntegrator::getMaxIntegratorSteps ( ) const

virtualinherited

Return maximum number of integration steps.

◆ getNextDt()

double AMP::TimeIntegrator::RK12TimeIntegrator::getNextDt ( const bool good_solution )

overridevirtual

Specify next time step to use.

Reimplemented from AMP::TimeIntegrator::TimeIntegrator.

◆ getOperator()

std::shared_ptr< AMP::Operator::Operator > AMP::TimeIntegrator::TimeIntegrator::getOperator ( void )

inlineinherited

Definition at line 246 of file TimeIntegrator.h.

References AMP::TimeIntegrator::TimeIntegrator::d_operator.

◆ getSolution()

virtual std::shared_ptr< AMP::LinearAlgebra::Vector > AMP::TimeIntegrator::TimeIntegrator::getSolution ( void )

inlinevirtualinherited

Retrieve the current solution.

Definition at line 137 of file TimeIntegrator.h.

References AMP::TimeIntegrator::TimeIntegrator::d_solution_vector.

◆ getSourceTerm()

virtual AMP::LinearAlgebra::Vector::shared_ptr AMP::TimeIntegrator::TimeIntegrator::getSourceTerm ( void )

inlinevirtualinherited

Reimplemented in AMP::TimeIntegrator::IDATimeIntegrator.

Definition at line 266 of file TimeIntegrator.h.

References AMP::TimeIntegrator::TimeIntegrator::d_pSourceTerm.

◆ getTimeHistoryScalings()

virtual std::vector< double > AMP::TimeIntegrator::TimeIntegrator::getTimeHistoryScalings ( void )

inlinevirtualinherited

Scaling factors for previous time history vectors.

For RK methods the previous time vector is always scaled by 1. For multistep methods this vector can consist of multiple scalings with the first entry being the scaling for $y^{n-1}$, the next being for $y^{n-2}$ etc

Reimplemented in AMP::TimeIntegrator::BDFIntegrator.

Definition at line 276 of file TimeIntegrator.h.

◆ getTotalRejectedSteps()

virtual int AMP::TimeIntegrator::TimeIntegrator::getTotalRejectedSteps ( ) const

inlinevirtualinherited

Definition at line 248 of file TimeIntegrator.h.

References AMP::TimeIntegrator::TimeIntegrator::d_total_steprejects.

◆ initialize() [1/2]

void AMP::TimeIntegrator::RK12TimeIntegrator::initialize ( std::shared_ptr< AMP::TimeIntegrator::TimeIntegratorParameters > parameters )

override

Initialize from parameter list.

◆ initialize() [2/2]

virtual void AMP::TimeIntegrator::TimeIntegrator::initialize ( std::shared_ptr< TimeIntegratorParameters > parameters )

virtualinherited

Initialize state of time integrator.

Initialize state of time integrator. This includes creating solution vector and initializing solver components.

Reimplemented in AMP::TimeIntegrator::ImplicitIntegrator, AMP::TimeIntegrator::OxideTimeIntegrator, and AMP::TimeIntegrator::IDATimeIntegrator.

◆ printClassData()

void AMP::TimeIntegrator::TimeIntegrator::printClassData ( std::ostream & os ) const

inherited

Print out all members of integrator instance to given output stream.

◆ printStatistics()

virtual void AMP::TimeIntegrator::TimeIntegrator::printStatistics ( std::ostream & os = AMP::pout )

virtualinherited

Reimplemented in AMP::TimeIntegrator::BDFIntegrator, and AMP::TimeIntegrator::ImplicitIntegrator.

◆ putToDatabase()

void AMP::TimeIntegrator::TimeIntegrator::putToDatabase ( std::shared_ptr< AMP::Database > db )

inherited

Write out state of object to given database.

When assertion checking is active, the database pointer must be non-null.

◆ registerChildObjects()

void AMP::TimeIntegrator::RK12TimeIntegrator::registerChildObjects ( AMP::IO::RestartManager * manager ) const

overridevirtual

Register any child objects.

This function will register child objects with the manager

Parameters

manager Restart manager

Reimplemented from AMP::TimeIntegrator::TimeIntegrator.

◆ registerOperator()

virtual void AMP::TimeIntegrator::TimeIntegrator::registerOperator ( std::shared_ptr< AMP::Operator::Operator > op )

inlinevirtualinherited

Reimplemented in AMP::TimeIntegrator::ImplicitIntegrator.

Definition at line 241 of file TimeIntegrator.h.

References AMP::TimeIntegrator::TimeIntegrator::d_operator.

◆ registerWriter()

virtual void AMP::TimeIntegrator::TimeIntegrator::registerWriter ( std::shared_ptr< AMP::IO::Writer > writer )

inlinevirtualinherited

Registers a writer with the solver.

This function will register a writer with the solver. The solver may then register any vector components it "owns" with the writer.

Parameters

writer The writer to register

Definition at line 227 of file TimeIntegrator.h.

References AMP::TimeIntegrator::TimeIntegrator::d_writer.

◆ reset() [1/2]

void AMP::TimeIntegrator::RK12TimeIntegrator::reset ( std::shared_ptr< const AMP::TimeIntegrator::TimeIntegratorParameters > parameters )

override

Resets the internal state of the time integrator as needed. A parameter argument is passed to allow for general flexibility in determining what needs to be reset Typically used after a regrid.

◆ reset() [2/2]

virtual void AMP::TimeIntegrator::TimeIntegrator::reset ( std::shared_ptr< const TimeIntegratorParameters > parameters )

pure virtualinherited

Resets the internal state of the time integrator.

Resets the internal state of the time integrator as needed. A parameter argument is passed to allow for general flexibility in determining what needs to be reset.

Implemented in AMP::TimeIntegrator::OxideTimeIntegrator, and AMP::TimeIntegrator::IDATimeIntegrator.

◆ setCurrentDt()

virtual void AMP::TimeIntegrator::TimeIntegrator::setCurrentDt ( const double dt )

inlinevirtualinherited

Definition at line 250 of file TimeIntegrator.h.

References AMP::TimeIntegrator::TimeIntegrator::d_current_dt.

◆ setCurrentTime()

virtual void AMP::TimeIntegrator::TimeIntegrator::setCurrentTime ( const double t )

inlinevirtualinherited

Definition at line 254 of file TimeIntegrator.h.

References AMP::TimeIntegrator::TimeIntegrator::d_current_time.

◆ setFinalTime()

virtual void AMP::TimeIntegrator::TimeIntegrator::setFinalTime ( const double t )

inlinevirtualinherited

Definition at line 258 of file TimeIntegrator.h.

References AMP::TimeIntegrator::TimeIntegrator::d_final_time.

◆ setInitialDt()

virtual void AMP::TimeIntegrator::TimeIntegrator::setInitialDt ( const double dt )

inlinevirtualinherited

Definition at line 252 of file TimeIntegrator.h.

References AMP::TimeIntegrator::TimeIntegrator::d_initial_dt.

◆ setInitialTime()

virtual void AMP::TimeIntegrator::TimeIntegrator::setInitialTime ( const double t )

inlinevirtualinherited

Definition at line 256 of file TimeIntegrator.h.

References AMP::TimeIntegrator::TimeIntegrator::d_initial_time.

◆ setSourceTerm()

virtual void AMP::TimeIntegrator::TimeIntegrator::setSourceTerm ( AMP::LinearAlgebra::Vector::shared_ptr src )

inlinevirtualinherited

Definition at line 262 of file TimeIntegrator.h.

References AMP::TimeIntegrator::TimeIntegrator::d_pSourceTerm.

◆ setupVectors()

void AMP::TimeIntegrator::RK12TimeIntegrator::setupVectors ( void )

private

setup the vectors used by RK12

◆ sizeOfTimeHistory()

virtual size_t AMP::TimeIntegrator::TimeIntegrator::sizeOfTimeHistory ( ) const

inlinevirtualinherited

Reimplemented in AMP::TimeIntegrator::BDFIntegrator.

Definition at line 284 of file TimeIntegrator.h.

◆ stepsRemaining()

virtual bool AMP::TimeIntegrator::TimeIntegrator::stepsRemaining ( ) const

virtualinherited

Have the number of integration steps reached the maximum.

Return true if the number of integration steps performed by the integrator has not reached the specified maximum; return false otherwise.

Reimplemented in AMP::TimeIntegrator::ImplicitIntegrator.

◆ type()

std::string AMP::TimeIntegrator::RK12TimeIntegrator::type ( ) const

inlineoverridevirtual

Return the name of the TimeIntegrator.

Reimplemented from AMP::TimeIntegrator::TimeIntegrator.

Definition at line 89 of file RK12TimeIntegrator.h.

◆ updateSolution()

void AMP::TimeIntegrator::RK12TimeIntegrator::updateSolution ( void )

overridevirtual

Update state of the solution.

Implements AMP::TimeIntegrator::TimeIntegrator.

◆ writeRestart()

void AMP::TimeIntegrator::RK12TimeIntegrator::writeRestart ( int64_t fid ) const

overridevirtual

Write restart data to file.

This function will write the mesh to an HDF5 file

Parameters

fid	File identifier to write

Reimplemented from AMP::TimeIntegrator::TimeIntegrator.

Member Data Documentation

◆ d_atol

double AMP::TimeIntegrator::RK12TimeIntegrator::d_atol = 0.0

private

Definition at line 133 of file RK12TimeIntegrator.h.

◆ d_current_dt

double AMP::TimeIntegrator::TimeIntegrator::d_current_dt = std::numeric_limits<double>::signaling_NaN()

protectedinherited

Definition at line 350 of file TimeIntegrator.h.

Referenced by AMP::TimeIntegrator::TimeIntegrator::getGamma(), and AMP::TimeIntegrator::TimeIntegrator::setCurrentDt().

◆ d_current_time

double AMP::TimeIntegrator::TimeIntegrator::d_current_time = std::numeric_limits<double>::signaling_NaN()

protectedinherited

Definition at line 346 of file TimeIntegrator.h.

Referenced by AMP::TimeIntegrator::TimeIntegrator::setCurrentTime().

◆ d_final_time

double AMP::TimeIntegrator::TimeIntegrator::d_final_time = std::numeric_limits<double>::signaling_NaN()

protectedinherited

Definition at line 345 of file TimeIntegrator.h.

Referenced by AMP::TimeIntegrator::TimeIntegrator::setFinalTime().

◆ d_ic_vector

std::shared_ptr<AMP::LinearAlgebra::Vector> AMP::TimeIntegrator::TimeIntegrator::d_ic_vector = nullptr

protectedinherited

Definition at line 315 of file TimeIntegrator.h.

◆ d_iDebugPrintInfoLevel

int AMP::TimeIntegrator::TimeIntegrator::d_iDebugPrintInfoLevel = 0

protectedinherited

Definition at line 357 of file TimeIntegrator.h.

◆ d_initial_dt

double AMP::TimeIntegrator::TimeIntegrator::d_initial_dt = std::numeric_limits<double>::signaling_NaN()

protectedinherited

initial time increment

Definition at line 349 of file TimeIntegrator.h.

Referenced by AMP::TimeIntegrator::TimeIntegrator::getInitialDt(), and AMP::TimeIntegrator::TimeIntegrator::setInitialDt().

◆ d_initial_time

double AMP::TimeIntegrator::TimeIntegrator::d_initial_time = std::numeric_limits<double>::signaling_NaN()

protectedinherited

Definition at line 344 of file TimeIntegrator.h.

Referenced by AMP::TimeIntegrator::TimeIntegrator::setInitialTime().

◆ d_initialized

bool AMP::TimeIntegrator::TimeIntegrator::d_initialized = false

protectedinherited

Set to true after initialization in constructors. Needed in getFromInput to avoid reseting some parameters in subsequent reset operations.

Definition at line 370 of file TimeIntegrator.h.

◆ d_integrator_step

int AMP::TimeIntegrator::TimeIntegrator::d_integrator_step = 0

protectedinherited

Definition at line 358 of file TimeIntegrator.h.

Referenced by AMP::TimeIntegrator::ImplicitIntegrator::stepsRemaining().

◆ d_k1_vec

std::shared_ptr<AMP::LinearAlgebra::Vector> AMP::TimeIntegrator::RK12TimeIntegrator::d_k1_vec

private

Definition at line 138 of file RK12TimeIntegrator.h.

◆ d_k2_vec

std::shared_ptr<AMP::LinearAlgebra::Vector> AMP::TimeIntegrator::RK12TimeIntegrator::d_k2_vec

private

Definition at line 139 of file RK12TimeIntegrator.h.

◆ d_max_dt

double AMP::TimeIntegrator::TimeIntegrator::d_max_dt = std::numeric_limits<double>::max()

protectedinherited

maximum allowable timestep (user defined)

Definition at line 355 of file TimeIntegrator.h.

◆ d_max_integrator_steps

int AMP::TimeIntegrator::TimeIntegrator::d_max_integrator_steps = 0

protectedinherited

Definition at line 359 of file TimeIntegrator.h.

Referenced by AMP::TimeIntegrator::ImplicitIntegrator::stepsRemaining().

◆ d_min_dt

double AMP::TimeIntegrator::TimeIntegrator::d_min_dt = std::numeric_limits<double>::signaling_NaN()

protectedinherited

Definition at line 352 of file TimeIntegrator.h.

◆ d_new_solution

std::shared_ptr<AMP::LinearAlgebra::Vector> AMP::TimeIntegrator::RK12TimeIntegrator::d_new_solution

private

Definition at line 137 of file RK12TimeIntegrator.h.

◆ d_number_regrid_states

int AMP::TimeIntegrator::RK12TimeIntegrator::d_number_regrid_states = 0

private

Definition at line 130 of file RK12TimeIntegrator.h.

◆ d_object_name

std::string AMP::TimeIntegrator::TimeIntegrator::d_object_name

protectedinherited

Definition at line 305 of file TimeIntegrator.h.

Referenced by AMP::TimeIntegrator::ImplicitIntegrator::getObjectName().

◆ d_old_dt

double AMP::TimeIntegrator::TimeIntegrator::d_old_dt = std::numeric_limits<double>::signaling_NaN()

protectedinherited

Definition at line 351 of file TimeIntegrator.h.

◆ d_operator

std::shared_ptr<AMP::Operator::Operator> AMP::TimeIntegrator::TimeIntegrator::d_operator

protectedinherited

The operator is the right hand side operator for an explicit integrator when the time integration problem is : u_t = f(u) but in the case of implicit time integrators the operator represents u_t-f(u)

Definition at line 328 of file TimeIntegrator.h.

Referenced by AMP::TimeIntegrator::TimeIntegrator::getOperator(), and AMP::TimeIntegrator::TimeIntegrator::registerOperator().

◆ d_pMassOperator

std::shared_ptr<AMP::Operator::Operator> AMP::TimeIntegrator::TimeIntegrator::d_pMassOperator

protectedinherited

The operator is the left hand side mass operator (for FEM formulations)

Definition at line 333 of file TimeIntegrator.h.

◆ d_pParameters

std::shared_ptr<TimeIntegratorParameters> AMP::TimeIntegrator::TimeIntegrator::d_pParameters

protectedinherited

pointer to parameters

Definition at line 310 of file TimeIntegrator.h.

◆ d_pSourceTerm

std::shared_ptr<AMP::LinearAlgebra::Vector> AMP::TimeIntegrator::TimeIntegrator::d_pSourceTerm

protectedinherited

Definition at line 338 of file TimeIntegrator.h.

Referenced by AMP::TimeIntegrator::TimeIntegrator::getSourceTerm(), and AMP::TimeIntegrator::TimeIntegrator::setSourceTerm().

◆ d_safety_factor

double AMP::TimeIntegrator::RK12TimeIntegrator::d_safety_factor = 0.0

private

Definition at line 132 of file RK12TimeIntegrator.h.

◆ d_solution_vector

std::shared_ptr<AMP::LinearAlgebra::Vector> AMP::TimeIntegrator::TimeIntegrator::d_solution_vector

protectedinherited

Definition at line 320 of file TimeIntegrator.h.

Referenced by AMP::TimeIntegrator::TimeIntegrator::getSolution().

◆ d_total_steprejects

int AMP::TimeIntegrator::TimeIntegrator::d_total_steprejects = 0

protectedinherited

Definition at line 361 of file TimeIntegrator.h.

Referenced by AMP::TimeIntegrator::BDFIntegrator::getNumberOfStepRejections(), and AMP::TimeIntegrator::TimeIntegrator::getTotalRejectedSteps().

◆ d_use_fixed_dt

bool AMP::TimeIntegrator::RK12TimeIntegrator::d_use_fixed_dt = false

private

Definition at line 135 of file RK12TimeIntegrator.h.

◆ d_writer

std::shared_ptr<AMP::IO::Writer> AMP::TimeIntegrator::TimeIntegrator::d_writer

protectedinherited

keeps track of total number of step rejections

Definition at line 364 of file TimeIntegrator.h.

Referenced by AMP::TimeIntegrator::TimeIntegrator::registerWriter().

◆ d_z_vec

std::shared_ptr<AMP::LinearAlgebra::Vector> AMP::TimeIntegrator::RK12TimeIntegrator::d_z_vec

private

Definition at line 140 of file RK12TimeIntegrator.h.

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

src/time_integrators/RK12TimeIntegrator.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Detailed Description

1 | 1

Member Typedef Documentation

◆ shared_ptr

Constructor & Destructor Documentation

◆ RK12TimeIntegrator() [1/3]

◆ ~RK12TimeIntegrator()

◆ RK12TimeIntegrator() [2/3]

◆ RK12TimeIntegrator() [3/3]

Member Function Documentation

◆ advanceSolution()

◆ appendRhsVector()

◆ appendSolutionVector()

◆ checkNewSolution()

◆ createTimeIntegrator()

◆ getCurrentDt()

◆ getCurrentTime()

◆ getFinalTime()

◆ getFromInput()

◆ getFromRestart()

◆ getGamma()

◆ getID()

◆ getInitialDt()

◆ getInitialTime()

◆ getIntegratorStep()

◆ getMaxIntegratorSteps()

◆ getNextDt()

◆ getOperator()

◆ getSolution()

◆ getSourceTerm()

◆ getTimeHistoryScalings()

◆ getTotalRejectedSteps()

◆ initialize() [1/2]

◆ initialize() [2/2]

◆ printClassData()

◆ printStatistics()

◆ putToDatabase()

◆ registerChildObjects()

◆ registerOperator()

◆ registerWriter()

◆ reset() [1/2]

◆ reset() [2/2]

◆ setCurrentDt()

◆ setCurrentTime()

◆ setFinalTime()

◆ setInitialDt()

◆ setInitialTime()

◆ setSourceTerm()

◆ setupVectors()

◆ sizeOfTimeHistory()

◆ stepsRemaining()

◆ type()

◆ updateSolution()

◆ writeRestart()

Member Data Documentation

◆ d_atol

◆ d_current_dt

◆ d_current_time

◆ d_final_time

◆ d_ic_vector

◆ d_iDebugPrintInfoLevel

◆ d_initial_dt

◆ d_initial_time

◆ d_initialized

◆ d_integrator_step

◆ d_k1_vec

◆ d_k2_vec

◆ d_max_dt

◆ d_max_integrator_steps

◆ d_min_dt

◆ d_new_solution

◆ d_number_regrid_states

◆ d_object_name