cs_user_radiative_transfer.c File Reference

User function for input of radiative transfer parameters: absorption coefficient and net radiation flux. More...

#include "cs_defs.h"
#include <assert.h>
#include <string.h>
#include <math.h>
#include "bft_mem.h"
#include "bft_error.h"
#include "bft_printf.h"
#include "cs_base.h"
#include "cs_field.h"
#include "cs_field_pointer.h"
#include "cs_field_operator.h"
#include "cs_math.h"
#include "cs_mesh.h"
#include "cs_mesh_location.h"
#include "cs_mesh_quantities.h"
#include "cs_halo.h"
#include "cs_log.h"
#include "cs_notebook.h"
#include "cs_parall.h"
#include "cs_parameters.h"
#include "cs_physical_constants.h"
#include "cs_physical_model.h"
#include "cs_prototypes.h"
#include "cs_restart.h"
#include "cs_rotation.h"
#include "cs_time_step.h"
#include "cs_selector.h"
#include "cs_rad_transfer.h"
#include "cs_post.h"

Include dependency graph for cs_user_radiative_transfer.c:

Functions
void	cs_user_radiative_transfer_parameters (void)
	User function for input of radiative transfer module options. More...
void	cs_user_rad_transfer_absorption (const int bc_type[], const cs_real_t dt[], cs_real_t ck[])
	Absorption coefficient for radiative module. More...
void	cs_user_rad_transfer_net_flux (const int bc_type[], const cs_real_t dt[], const cs_real_t coefap[], const cs_real_t coefbp[], const cs_real_t cofafp[], const cs_real_t cofbfp[], const cs_real_t twall[], const cs_real_t qincid[], const cs_real_t xlam[], const cs_real_t epa[], const cs_real_t eps[], const cs_real_t ck[], cs_real_t net_flux[])
	Compute the net radiation flux. More...

Detailed Description

User function for input of radiative transfer parameters: absorption coefficient and net radiation flux.

See Examples of data settings for radiative transfers for examples.

Function Documentation

cs_user_rad_transfer_absorption()

void cs_user_rad_transfer_absorption	(	const int	bc_type[],
		const cs_real_t	dt[],
		cs_real_t	ck[]
	)

Absorption coefficient for radiative module.

It is necessary to define the value of the fluid's absorption coefficient Ck.

This value is defined automatically for specific physical models, such as gas and coal combustion, so this function should not be used with these models.

For a transparent medium, the coefficient should be set to 0.

In the case of the P-1 model, we check that the optical length is at least of the order of 1.

Parameters

[in]	bc_type	boundary face types
[in]	dt	time step (per cell)
[out]	ck	medium's absorption coefficient (zero if transparent)

cs_user_rad_transfer_net_flux()

void cs_user_rad_transfer_net_flux	(	const int	bc_type[],
		const cs_real_t	dt[],
		const cs_real_t	coefap[],
		const cs_real_t	coefbp[],
		const cs_real_t	cofafp[],
		const cs_real_t	cofbfp[],
		const cs_real_t	twall[],
		const cs_real_t	qincid[],
		const cs_real_t	xlam[],
		const cs_real_t	epa[],
		const cs_real_t	eps[],
		const cs_real_t	ck[],
		cs_real_t	net_flux[]
	)

Compute the net radiation flux.

The density of net radiation flux must be calculated consistently with the boundary conditions of the intensity. The density of net flux is the balance between the radiative emiting part of a boudary face (and not the reflecting one) and the radiative absorbing part.

Parameters

[in]	bc_type	boundary face types
[in]	dt	time step (per cell)
[in]	coefap	boundary condition work array for the luminance (explicit part)
[in]	coefbp	boundary condition work array for the luminance (implicit part)
[in]	cofafp	boundary condition work array for the diffusion of the luminance (explicit part)
[in]	cofbfp	boundary condition work array for the diffusion of the luminance (implicit part)
[in]	twall	inside current wall temperature (K)
[in]	qincid	radiative incident flux (W/m2)
[in]	xlam	conductivity (W/m/K)
[in]	epa	thickness (m)
[in]	eps	emissivity (>0)
[in]	ck	absorption coefficient
[out]	net_flux	net flux (W/m2)

cs_user_radiative_transfer_parameters()

void cs_user_radiative_transfer_parameters

(

void

)

User function for input of radiative transfer module options.