#include "cs_defs.h"
#include "cs_base.h"
#include "cs_zone.h"

Include dependency graph for cs_les_inflow.h:

Data Structures
struct	cs_inflow_sem_t

Typedefs
typedef struct _cs_inlet_t	cs_inlet_t

Enumerations
enum	cs_les_inflow_type_t { CS_INFLOW_LAMINAR, CS_INFLOW_RANDOM, CS_INFLOW_BATTEN, CS_INFLOW_SEM }

Functions
void	synthe (const cs_real_t *const ttcabs, const cs_real_t dt[], cs_real_t rcodcl[])

void	cs_les_inflow_initialize (void)
	Creation of structures for the LES inflows. More...

void	cs_les_inflow_finalize (void)
	Finalize turbulent inflow generation API. More...

void	cs_les_inflow_add_inlet (cs_les_inflow_type_t type, bool volume_mode, const cs_zone_t zone, int n_entities, int verbosity, const cs_real_t vel_r, cs_real_t k_r, cs_real_t eps_r)
	Add an inlet definition for synthetic turbulence inflow generation. More...

void	cs_les_synthetic_eddy_restart_read (void)

void	cs_les_synthetic_eddy_restart_write (void)

void	cs_les_synthetic_eddy_method (cs_lnum_t n_points, const cs_lnum_t elt_ids[], const cs_real_3_t point_coordinates[], const cs_real_t point_weight, int initialize, int verbosity, cs_inflow_sem_t inflow, cs_real_t t_cur, const cs_real_3_t vel_m_l[], const cs_real_6_t rij_l[], const cs_real_t eps_l[], cs_real_3_t fluctuations[])
	Generation of synthetic turbulence via the Synthetic Eddy Method (SEM). More...

void	cs_les_rescale_fluctuations (cs_lnum_t n_points, const cs_real_6_t statistics[], cs_real_3_t fluctuations[])
	Rescale fluctuations by statistics following the Lund method. More...

void	cs_les_synthetic_eddy_set_n_restart_structures (int n_structures)
	Set number of structures used for volume SEM when restarting from another turbulence model. More...

int	cs_les_synthetic_eddy_get_n_restart_structures (void)
	Return number of structures used for volume SEM when restarting from another turbulence model. More...

void	cs_les_inflow_get_restart (bool allow_read, bool allow_write)
	Query behavior of the LES inflow module in case of restart. More...

void	cs_les_inflow_set_restart (bool allow_read, bool allow_write)
	Define behavior of the LES inflow module in case of restart. More...

void	cs_user_les_inflow_define (void)
	Define parameters of synthetic turbulence at LES inflow. More...

void	cs_user_les_inflow_update (const cs_zone_t zone, cs_real_t vel_r[3], cs_real_t k_r, cs_real_t *eps_r)
	Update of the characteristics of a given synthetic turbulence inlet. More...

void	cs_user_les_inflow_advanced (const cs_zone_t *zone, cs_real_3_t vel_l[], cs_real_6_t rij_l[], cs_real_t eps_l[])
	Definition of mean velocity, Reynolds stresses and dissipation rate for each boundary face of the given synthetic turbulence inlet. More...

Typedef Documentation

◆ cs_inlet_t

typedef struct _cs_inlet_t cs_inlet_t

Enumeration Type Documentation

◆ cs_les_inflow_type_t

enum cs_les_inflow_type_t

Enumerator
CS_INFLOW_LAMINAR	Laminar fluctuations (i.e no fluctuation)
CS_INFLOW_RANDOM	Gaussian random fluctuation
CS_INFLOW_BATTEN	Fluctuations generated by the Batten method
CS_INFLOW_SEM	Fluctuations generated by the Synthetic Eddy Method

Function Documentation

◆ cs_les_inflow_add_inlet()

void cs_les_inflow_add_inlet	(	cs_les_inflow_type_t	type,
		bool	volume_mode,
		const cs_zone_t *	zone,
		int	n_entities,
		int	verbosity,
		const cs_real_t *	vel_r,
		cs_real_t	k_r,
		cs_real_t	eps_r
	)

Add an inlet definition for synthetic turbulence inflow generation.

Remarks

:

eps_r is used only for CS_INFLOW_BATTEN and CS_INFLOW_SEM types.
Strictly positive values are required for k_r and eps_r.
Finer definition of the statistics of the flow at the inlet can be done later using cs_user_les_inflow_advanced.

Parameters

[out]	type	type of inflow method at the inlet
[out]	volume_mode	if true, generate turbulence over the whole domain (only if type is CS_INFLOW_SEM)
[in]	zone	pointer to associated boundary zone
[out]	n_entities	number of structures or modes
[out]	verbosity	verbosity level
[out]	vel_r	reference mean velocity
[out]	k_r	reference turbulent kinetic energy
[out]	eps_r	reference turbulent dissipation

◆ cs_les_inflow_finalize()

void cs_les_inflow_finalize ( void )

Finalize turbulent inflow generation API.

◆ cs_les_inflow_get_restart()

void cs_les_inflow_get_restart	(	bool *	allow_read,
		bool *	allow_write
	)

Query behavior of the LES inflow module in case of restart.

See cs_les_synthetic_eddy_set_restart for details.

Parameters

[out]	allow_read	pointer to read flag, or NULL
[out]	allow_write	pointer to write flag, or NULL

◆ cs_les_inflow_initialize()

void cs_les_inflow_initialize ( void )

Creation of structures for the LES inflows.

◆ cs_les_inflow_set_restart()

void cs_les_inflow_set_restart	(	bool	allow_read,
		bool	allow_write
	)

Define behavior of the LES inflow module in case of restart.

By default, a restart file is read if present, and a checkpoint written. If not read, synthetic fluctuations are re-initialized.

Parameters

[in]	allow_read	allow reading a relevant checkpoint if present
[in]	allow_write	allow writing a relevant checkpoint if present

By default, a specific file is read if present in the restart folder, and files written in the checkpoint folder at global checkpoint intervals.

If not read, synthetic fluctuations are re-initialized.

Parameters

[in]	allow_read	allow reading a relevant checkpoint if present
[in]	allow_write	allow writing a relevant checkpoint if present

◆ cs_les_rescale_fluctuations()

void cs_les_rescale_fluctuations	(	cs_lnum_t	n_points,
		const cs_real_6_t	statistics[],
		cs_real_3_t	fluctuations[]
	)

Rescale fluctuations by statistics following the Lund method.

One assumes that the statistics are interlaced and ordered as follows: <u'u'> <v'v'> <w'w'> <u'v'> <v'w'> <u'w'>

Parameters

[in]	n_points	local number of points where turbulence is generated
[in]	statistics	statistics (i.e. Reynolds stresses)

One assumes that the statistics are interlaced and ordered as follows: <u'u'> <v'v'> <w'w'> <u'v'> <v'w'> <u'w'>

Parameters

[in]	n_points	local number of points where turbulence is generated
[in]	statistics	statistics (i.e. Reynolds stresses)

◆ cs_les_synthetic_eddy_get_n_restart_structures()

int cs_les_synthetic_eddy_get_n_restart_structures ( void )

Return number of structures used for volume SEM when restarting from another turbulence model.

Returns: number of structures for initialization

◆ cs_les_synthetic_eddy_method()

void cs_les_synthetic_eddy_method	(	cs_lnum_t	n_points,
		const cs_lnum_t	elt_ids[],
		const cs_real_3_t	point_coordinates[],
		const cs_real_t *	point_weight,
		int	initialize,
		int	verbosity,
		cs_inflow_sem_t *	inflow,
		cs_real_t	t_cur,
		const cs_real_3_t	vel_m_l[],
		const cs_real_6_t	rij_l[],
		const cs_real_t	eps_l[],
		cs_real_3_t	fluctuations[]
	)

Generation of synthetic turbulence via the Synthetic Eddy Method (SEM).

Parameters

[in]	n_points	local number of points where turbulence is generated
[in]	elt_ids	local id of inlet elements
[in]	point_coordinates	point coordinates
[in]	point_weight	point weights (surface, volume or NULL)
[in]	initialize	initialization indicator
[in]	verbosity	verbosity level
[in]	inflow	pointer to structure for Batten method
[in]	t_cur	current time
[in]	vel_m_l	mean velocity at each point
[in]	rij_l	reynolds stresses at each point
[in]	eps_l	dissipation rate at each point
[out]	fluctuations	velocity fluctuations at each point
[in]	n_points	local number of points where turbulence is generated
[in]	elt_ids	local id of inlet boundary faces
[in]	point_coordinates	point coordinates
[in]	point_weight	point weights (surface, volume or NULL)
[in]	initialize	initialization indicator
[in]	verbosity	verbosity level
[in]	inflow	pointer to structure for Batten method
[in]	t_cur	current time
[in]	vel_m_l	mean velocity at each point
[in]	rij_l	Reynolds stresses at each point
[in]	eps_l	dissipation rate at each point
[out]	fluctuations	velocity fluctuations at each point

◆ cs_les_synthetic_eddy_restart_read()

void cs_les_synthetic_eddy_restart_read ( void )

◆ cs_les_synthetic_eddy_restart_write()

void cs_les_synthetic_eddy_restart_write ( void )

◆ cs_les_synthetic_eddy_set_n_restart_structures()

void cs_les_synthetic_eddy_set_n_restart_structures ( int n_structures )

Set number of structures used for volume SEM when restarting from another turbulence model.

By default, a restart file is read if present, and a checkpoint written. If not read, synthetic fluctuations are re-initialized.

Parameters

[in] n_structures number of structures for initialization

◆ cs_user_les_inflow_advanced()

void cs_user_les_inflow_advanced	(	const cs_zone_t *	zone,
		cs_real_3_t	vel_l[],
		cs_real_6_t	rij_l[],
		cs_real_t	eps_l[]
	)

Definition of mean velocity, Reynolds stresses and dissipation rate for each boundary face of the given synthetic turbulence inlet.

Accurate definition of mean velocity, Reynolds stresses and dissipation rate for each boundary face of the given synthetic turbulence inlet

Rij components are ordered as usual: XX, YY, ZZ, XY, YZ, XZ

Arrays are pre-initialized before this function is called (see cs_user_les_inflow_define).

vel_l[face_id][coo_id] = vel_r[coo_id]

rij_l[face_id][0] = 2./3. * k_l rij_l[face_id][1] = 2./3. * k_l rij_l[face_id][2] = 2./3. * k_l rij_l[face_id][3] = 0 rij_l[face_id][4] = 0 rij_l[face_id][5] = 0

eps_l[face_id] = eps_r

Parameters

[in]	zone	pointer to associated boundary zone
[in,out]	vel_l	velocity a zone faces
[in,out]	rij_l	reynods stresses at zone faces
[in,out]	eps_l	reference turbulent dissipation

◆ cs_user_les_inflow_define()

void cs_user_les_inflow_define ( void )

Define parameters of synthetic turbulence at LES inflow.

◆ cs_user_les_inflow_update()

void cs_user_les_inflow_update	(	const cs_zone_t *	zone,
		cs_real_t	vel_r[3],
		cs_real_t *	k_r,
		cs_real_t *	eps_r
	)

Update of the characteristics of a given synthetic turbulence inlet.

Parameters

[in]	zone	pointer to associated boundary zone
[out]	vel_r	reference mean velocity
[out]	k_r	reference turbulent kinetic energy
[out]	eps_r	reference turbulent dissipation

◆ synthe()

void synthe	(	const cs_real_t *const	ttcabs,
		const cs_real_t	dt[],
		cs_real_t	rcodcl[]
	)

Data Structures

Typedefs

Enumerations

Functions

Typedef Documentation

◆ cs_inlet_t

Enumeration Type Documentation

◆ cs_les_inflow_type_t

Function Documentation

◆ cs_les_inflow_add_inlet()

◆ cs_les_inflow_finalize()

◆ cs_les_inflow_get_restart()

◆ cs_les_inflow_initialize()

◆ cs_les_inflow_set_restart()

◆ cs_les_rescale_fluctuations()

◆ cs_les_synthetic_eddy_get_n_restart_structures()

◆ cs_les_synthetic_eddy_method()

◆ cs_les_synthetic_eddy_restart_read()

◆ cs_les_synthetic_eddy_restart_write()

◆ cs_les_synthetic_eddy_set_n_restart_structures()

◆ cs_user_les_inflow_advanced()

◆ cs_user_les_inflow_define()

◆ cs_user_les_inflow_update()

◆ synthe()