cs_lagr_sde.h File Reference

#include "base/cs_defs.h"

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Functions
void	cs_lagr_sde (cs_real_t dt_p, const cs_real_t **taup, const cs_real_3_t **tlag, const cs_real_3_t **piil, const cs_real_33_t **bx, cs_real_t tsfext[], cs_real_3_t *force_p, cs_real_t terbru[], const cs_real_t vislen[], const cs_real_3_t **beta, cs_lnum_t *nresnew)
	Integration of particle equations of motion:
void	cs_lagr_sde_attr (cs_lagr_attribute_t attr, cs_real_t *tcarac, cs_real_t *pip)
	Integration of a stochastic differential equation (SDE) for a user particle variable (attribute).

Function Documentation

cs_lagr_sde()

void cs_lagr_sde	(	cs_real_t	dt_p,
		const cs_real_t **	taup,
		const cs_real_3_t **	tlag,
		const cs_real_3_t **	piil,
		const cs_real_33_t **	bx,
		cs_real_t	tsfext[],
		cs_real_3_t *	force_p,
		cs_real_t	terbru[],
		const cs_real_t	vislen[],
		const cs_real_3_t **	beta,
		cs_lnum_t *	nresnew )

Integration of particle equations of motion:

• Standard Model : First or second order
• Deposition submodel (Guingo & Minier, 2008) if needed

Parameters

[in]	dt_p	lagrangian time step
[in]	taup	dynamic characteristic time
[in]	tlag	fluid characteristic time
[in]	piil	terme in P-U SDE integration
[in]	bx	turbulence characteristics
[out]	tsfext	info for return coupling source terms
[out]	force_p	forces per mass unit on particles (m/s^2)
[out]	terbru	Diffusion coefficient accounting for Brownian (molecular) effect
[in]	vislen	nu/u* = y/y+
[in]	beta	proportional to the gradient of T_lag

• Standard Model : First or second order
• Deposition submodel (Guingo & Minier, 2008) if needed

Parameters

[in]	dt_p	lagrangian time step
[in]	taup	dynamic characteristic time
[in]	tlag	fluid characteristic time
[in]	piil	term in integration of U-P SDEs
[in]	bx	turbulence characteristics
[out]	tsfext	info for return coupling source terms
[out]	force_p	forces per mass unit on particles (m/s^2)
[out]	terbru	Diffusion coefficient accounting for Brownian (molecular) effect
[in]	vislen	nu/u* = y/y+
[in]	beta	proportional to the gradient of T_lag

cs_lagr_sde_attr()

void cs_lagr_sde_attr	(	cs_lagr_attribute_t	attr,
		cs_real_t *	tcarac,
		cs_real_t *	pip )

Integration of a stochastic differential equation (SDE) for a user particle variable (attribute).

When there is interaction with a boundary face, the integration degenerates to order 1 (even if the 2nd order scheme is active).

Parameters

[in]	attr	attribute/variable
[in]	tcarac	variable characteristic time

autotoc_md54

Parameters

[in]

pip

right-hand side associated with SDE

When there is interaction with a boundary face, the integration degenerates to order 1 (even if the 2nd order scheme is active).

Parameters

[in]	attr	attribute/variable
[in]	tcarac	variable characteristic time
[in]	pip	right-hand side associated with SDE