amr_wind::SimTime Class Reference

#include <SimTime.H>

Public Member Functions
	SimTime ()=default
	~SimTime ()=default
bool	new_timestep ()
bool	continue_simulation () const
bool	do_regrid () const
bool	write_plot_file () const
bool	write_checkpoint () const
bool	write_last_plot_file () const
bool	write_last_checkpoint () const
void	set_current_cfl (const amrex::Real conv_cfl, const amrex::Real diff_cfl, const amrex::Real src_cfl)
void	set_restart_time (int tidx, amrex::Real time)
AMREX_FORCE_INLINE amrex::Real	delta_t () const
AMREX_FORCE_INLINE amrex::Real &	delta_t ()
AMREX_FORCE_INLINE amrex::Real	delta_t_nm1 () const
AMREX_FORCE_INLINE amrex::Real	delta_t_nm2 () const
AMREX_FORCE_INLINE amrex::Real &	delta_t_nm1 ()
AMREX_FORCE_INLINE amrex::Real &	delta_t_nm2 ()
AMREX_FORCE_INLINE amrex::Real	current_time () const
AMREX_FORCE_INLINE amrex::Real &	current_time ()
AMREX_FORCE_INLINE amrex::Real	new_time () const
AMREX_FORCE_INLINE amrex::Real	max_cfl () const
AMREX_FORCE_INLINE int	time_index () const
AMREX_FORCE_INLINE int &	time_index ()
AMREX_FORCE_INLINE bool	adaptive_timestep () const
AMREX_FORCE_INLINE bool	use_force_cfl () const
AMREX_FORCE_INLINE int	regrid_interval () const
AMREX_FORCE_INLINE amrex::Real	start_time () const
AMREX_FORCE_INLINE amrex::Real	stop_time () const
AMREX_FORCE_INLINE int	start_time_index () const
AMREX_FORCE_INLINE int	stop_time_index () const
AMREX_FORCE_INLINE int	chkpt_interval () const
void	parse_parameters ()
	Read user defined options from input file.

Static Public Attributes
static constexpr int	max_time_states = 3

Private Attributes
amrex::Vector< amrex::Real >	m_dt
	Timestep sizes.
amrex::Real	m_cur_time {0.0}
	Current simulation time.
amrex::Real	m_new_time {0.0}
	Time where a new timestep will advance to.
amrex::Real	m_start_time {0.0}
	Starting simulation time (to track restart)
amrex::Real	m_stop_time {-1.0}
	Max time for simulation.
amrex::Real	m_max_cfl {0.5}
	Maximum CFL constraint.
amrex::Real	m_fixed_dt {-1.0}
	Fixed delta_t indicated by user.
amrex::Real	m_initial_dt {-1.0}
	Initial delta_t indicated by user.
amrex::Real	m_current_cfl {0.0}
	Current CFL.
amrex::Real	m_init_shrink {0.1}
	Initial reduction in timestep size for startup.
amrex::Real	m_dt_growth {0.1}
	Maximum growth of dt between timesteps.
amrex::Real	m_chkpt_t_interval {-1.0}
	Time interval for writing checkpoint/restart files.
amrex::Real	m_chkpt_t_delay {0.0}
	Time delay for checkpoint/restart output.
amrex::Real	m_chkpt_t_tol {1e-8}
	Relative (to dt) tolerance for checkpoint time interval output.
amrex::Real	m_force_chkpt_tol {1e-3}
	Relative (to chkpt_t_interval) tolerance for enforcing dt.
amrex::Real	m_plt_t_interval {-1.0}
	Time interval for plot file output.
amrex::Real	m_plt_t_delay {0.0}
	Time delay for plot file output.
amrex::Real	m_plt_t_tol {1e-8}
	Relative (to dt) tolerance for plot time interval output.
amrex::Real	m_force_plt_tol {1e-3}
	Relative (to plt_t_interval) tolerance for enforcing dt.
int	m_time_index {0}
	Counter for the number of timesteps since start of simulation.
int	m_start_time_index {0}
	Initial starting time index.
int	m_chkpt_start_index {0}
	Initial starting time index for generating checkpoint files.
int	m_plt_start_index {0}
	Initial starting time index for generating output files.
int	m_regrid_start_index {0}
	Initial starting time index for regriding.
int	m_stop_time_index {-1}
	Maximum timesteps for simulation.
int	m_chkpt_interval {-1}
	Time step interval for writing checkpoint/restart files.
int	m_chkpt_delay {0}
int	m_plt_interval {-1}
	Time step interval for plot file output.
int	m_plt_delay {0}
	Time step delay for plot file output.
int	m_regrid_interval {-1}
	Time interval for regridding.
int	m_verbose {0}
	Verbosity.
bool	m_adaptive {false}
	Flag indicating whether timestep is adaptive.
bool	m_is_init {true}
	Flag indicating if this is initialization.
bool	m_use_force_cfl {true}
	Flag indicating if forcing should be included in CFL calculation.
bool	m_force_chkpt_dt {false}
	Bool for if checkpoint time interval should be forced.
bool	m_force_plt_dt {false}
	Bool for if plt time interval should be forced.

Detailed Description

Time manager for simulations

Constructor & Destructor Documentation

SimTime()

amr_wind::SimTime::SimTime ( )

default

~SimTime()

amr_wind::SimTime::~SimTime ( )

default

Member Function Documentation

adaptive_timestep()

AMREX_FORCE_INLINE bool amr_wind::SimTime::adaptive_timestep ( ) const

inline

chkpt_interval()

AMREX_FORCE_INLINE int amr_wind::SimTime::chkpt_interval ( ) const

inline

continue_simulation()

bool amr_wind::SimTime::continue_simulation

(

)

const

Return true if simulation should continue

current_time() [1/2]

AMREX_FORCE_INLINE amrex::Real & amr_wind::SimTime::current_time ( )

inline

current_time() [2/2]

AMREX_FORCE_INLINE amrex::Real amr_wind::SimTime::current_time ( ) const

inline

delta_t() [1/2]

AMREX_FORCE_INLINE amrex::Real & amr_wind::SimTime::delta_t ( )

inline

delta_t() [2/2]

AMREX_FORCE_INLINE amrex::Real amr_wind::SimTime::delta_t ( ) const

inline

delta_t_nm1() [1/2]

AMREX_FORCE_INLINE amrex::Real & amr_wind::SimTime::delta_t_nm1 ( )

inline

delta_t_nm1() [2/2]

AMREX_FORCE_INLINE amrex::Real amr_wind::SimTime::delta_t_nm1 ( ) const

inline

delta_t_nm2() [1/2]

AMREX_FORCE_INLINE amrex::Real & amr_wind::SimTime::delta_t_nm2 ( )

inline

delta_t_nm2() [2/2]

AMREX_FORCE_INLINE amrex::Real amr_wind::SimTime::delta_t_nm2 ( ) const

inline

do_regrid()

bool amr_wind::SimTime::do_regrid

(

)

const

Return true if mesh refinement should be performed at this timestep

max_cfl()

AMREX_FORCE_INLINE amrex::Real amr_wind::SimTime::max_cfl ( ) const

inline

new_time()

AMREX_FORCE_INLINE amrex::Real amr_wind::SimTime::new_time ( ) const

inline

new_timestep()

bool amr_wind::SimTime::new_timestep

(

)

Advance to a new time state and update internal time states

Return a boolean flag indicating if the simulation should continue.

parse_parameters()

void amr_wind::SimTime::parse_parameters

(

)

Read user defined options from input file.

regrid_interval()

AMREX_FORCE_INLINE int amr_wind::SimTime::regrid_interval ( ) const

inline

set_current_cfl()

void amr_wind::SimTime::set_current_cfl	(	const amrex::Real	conv_cfl,
		const amrex::Real	diff_cfl,
		const amrex::Real	src_cfl )

Set current CFL and update timestep based on CFL components

set_restart_time()

void amr_wind::SimTime::set_restart_time	(	int	tidx,
		amrex::Real	time )

Set start time and index based on checkpoint/restart file

Parameters

tidx	Time index from checkpoint file
time	Time read from checkpoint file

start_time()

AMREX_FORCE_INLINE amrex::Real amr_wind::SimTime::start_time ( ) const

inline

start_time_index()

AMREX_FORCE_INLINE int amr_wind::SimTime::start_time_index ( ) const

inline

stop_time()

AMREX_FORCE_INLINE amrex::Real amr_wind::SimTime::stop_time ( ) const

inline

stop_time_index()

AMREX_FORCE_INLINE int amr_wind::SimTime::stop_time_index ( ) const

inline

time_index() [1/2]

AMREX_FORCE_INLINE int & amr_wind::SimTime::time_index ( )

inline

time_index() [2/2]

AMREX_FORCE_INLINE int amr_wind::SimTime::time_index ( ) const

inline

use_force_cfl()

AMREX_FORCE_INLINE bool amr_wind::SimTime::use_force_cfl ( ) const

inline

write_checkpoint()

bool amr_wind::SimTime::write_checkpoint

(

)

const

Return true if checkpoint files should be written at this timestep

write_last_checkpoint()

bool amr_wind::SimTime::write_last_checkpoint

(

)

const

Return true if checkpoint files should be written at this timestep

write_last_plot_file()

bool amr_wind::SimTime::write_last_plot_file

(

)

const

Return true if plot files should be written at this timestep

write_plot_file()

bool amr_wind::SimTime::write_plot_file

(

)

const

Return true if plot files should be written at this timestep

Member Data Documentation

m_adaptive

bool amr_wind::SimTime::m_adaptive {false}

private

Flag indicating whether timestep is adaptive.

m_chkpt_delay

int amr_wind::SimTime::m_chkpt_delay {0}

private

Time step delay for checkpoint/restart output (this means that output only happens after the delay)

m_chkpt_interval

int amr_wind::SimTime::m_chkpt_interval {-1}

private

Time step interval for writing checkpoint/restart files.

m_chkpt_start_index

int amr_wind::SimTime::m_chkpt_start_index {0}

private

Initial starting time index for generating checkpoint files.

m_chkpt_t_delay

amrex::Real amr_wind::SimTime::m_chkpt_t_delay {0.0}

private

Time delay for checkpoint/restart output.

m_chkpt_t_interval

amrex::Real amr_wind::SimTime::m_chkpt_t_interval {-1.0}

private

Time interval for writing checkpoint/restart files.

m_chkpt_t_tol

amrex::Real amr_wind::SimTime::m_chkpt_t_tol {1e-8}

private

Relative (to dt) tolerance for checkpoint time interval output.

m_cur_time

amrex::Real amr_wind::SimTime::m_cur_time {0.0}

private

Current simulation time.

m_current_cfl

amrex::Real amr_wind::SimTime::m_current_cfl {0.0}

private

Current CFL.

m_dt

amrex::Vector<amrex::Real> amr_wind::SimTime::m_dt

private

Initial value:

=
        amrex::Vector<amrex::Real>(max_time_states, 0.0)

Timestep sizes.

m_dt_growth

amrex::Real amr_wind::SimTime::m_dt_growth {0.1}

private

Maximum growth of dt between timesteps.

m_fixed_dt

amrex::Real amr_wind::SimTime::m_fixed_dt {-1.0}

private

Fixed delta_t indicated by user.

m_force_chkpt_dt

bool amr_wind::SimTime::m_force_chkpt_dt {false}

private

Bool for if checkpoint time interval should be forced.

m_force_chkpt_tol

amrex::Real amr_wind::SimTime::m_force_chkpt_tol {1e-3}

private

Relative (to chkpt_t_interval) tolerance for enforcing dt.

m_force_plt_dt

bool amr_wind::SimTime::m_force_plt_dt {false}

private

Bool for if plt time interval should be forced.

m_force_plt_tol

amrex::Real amr_wind::SimTime::m_force_plt_tol {1e-3}

private

Relative (to plt_t_interval) tolerance for enforcing dt.

m_init_shrink

amrex::Real amr_wind::SimTime::m_init_shrink {0.1}

private

Initial reduction in timestep size for startup.

m_initial_dt

amrex::Real amr_wind::SimTime::m_initial_dt {-1.0}

private

Initial delta_t indicated by user.

m_is_init

bool amr_wind::SimTime::m_is_init {true}

private

Flag indicating if this is initialization.

m_max_cfl

amrex::Real amr_wind::SimTime::m_max_cfl {0.5}

private

Maximum CFL constraint.

m_new_time

amrex::Real amr_wind::SimTime::m_new_time {0.0}

private

Time where a new timestep will advance to.

m_plt_delay

int amr_wind::SimTime::m_plt_delay {0}

private

Time step delay for plot file output.

m_plt_interval

int amr_wind::SimTime::m_plt_interval {-1}

private

Time step interval for plot file output.

m_plt_start_index

int amr_wind::SimTime::m_plt_start_index {0}

private

Initial starting time index for generating output files.

m_plt_t_delay

amrex::Real amr_wind::SimTime::m_plt_t_delay {0.0}

private

Time delay for plot file output.

m_plt_t_interval

amrex::Real amr_wind::SimTime::m_plt_t_interval {-1.0}

private

Time interval for plot file output.

m_plt_t_tol

amrex::Real amr_wind::SimTime::m_plt_t_tol {1e-8}

private

Relative (to dt) tolerance for plot time interval output.

m_regrid_interval

int amr_wind::SimTime::m_regrid_interval {-1}

private

Time interval for regridding.

m_regrid_start_index

int amr_wind::SimTime::m_regrid_start_index {0}

private

Initial starting time index for regriding.

m_start_time

amrex::Real amr_wind::SimTime::m_start_time {0.0}

private

Starting simulation time (to track restart)

m_start_time_index

int amr_wind::SimTime::m_start_time_index {0}

private

Initial starting time index.

m_stop_time

amrex::Real amr_wind::SimTime::m_stop_time {-1.0}

private

Max time for simulation.

m_stop_time_index

int amr_wind::SimTime::m_stop_time_index {-1}

private

Maximum timesteps for simulation.

m_time_index

int amr_wind::SimTime::m_time_index {0}

private

Counter for the number of timesteps since start of simulation.

m_use_force_cfl

bool amr_wind::SimTime::m_use_force_cfl {true}

private

Flag indicating if forcing should be included in CFL calculation.

m_verbose

int amr_wind::SimTime::m_verbose {0}

private

Verbosity.

max_time_states

int amr_wind::SimTime::max_time_states = 3

staticconstexpr

---

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

• /home/runner/work/amr-wind/amr-wind/amr-wind/core/SimTime.H
• /home/runner/work/amr-wind/amr-wind/amr-wind/core/SimTime.cpp