cns_bc.h File Reference

Prototypes for boundary-condition functions. More...

#include "cns_bc_defs.h"

Go to the source code of this file.

Functions
int	local_frame (struct flow_state *FS, double cosX, double cosY)
	Change from a global (X,Y) frame of reference to a frame with its x-direction normal to the interface.
int	XY_frame (struct flow_state *FS, double cosX, double cosY)
	Change from a frame of reference with its x-direction normal to the interface. to a global (X,Y) frame of reference.
int	subsonic_inflow_properties (struct flow_state *stagnation, struct flow_state *inflow_state, double inflow_velocity)
	Given stagnation conditions, estimate the static conditions at the boundary cell.
int	apply_inviscid_bc (struct block_data *A, FILE *read_file, int *n_vary, double *t_old, double *ta_old)
	Set up ghost-cell values for the inviscid flux calculations.
int	apply_inviscid_bc_east (struct block_data *A, FILE *fp, int *n, double *t_old, double *ta_old)
	Set up ghost-cell values for the inviscid flux calculations EAST boundary.
int	apply_inviscid_bc_west (struct block_data *A, FILE *fp, int *n, double *t_old, double *ta_old)
	Set up ghost-cell values for the inviscid flux calculations WEST boundary.
int	apply_inviscid_bc_north (struct block_data *A, FILE *fp, int *n, double *t_old, double *ta_old)
	Set up ghost-cell values for the inviscid flux calculations NORTH boundary.
int	apply_inviscid_bc_south (struct block_data *A, FILE *fp, int *n, double *t_old, double *ta_old)
	Set up ghost-cell values for the inviscid flux calculations SOUTH boundary.
int	apply_viscous_bc (struct block_data *A)
	Apply viscous boundary conditions to the boundary cell interfaces.
int	set_MIRELS_free_stream_HeN2 (double r, double t, int iturb, struct flow_state *fs)
	Set the special inflow conditions for the small shock tube using Mirel's boundary layer theory. Helium driving Nitrogen.
int	set_MIRELS_free_stream_N2N2 (double r, double t, int iturb, struct flow_state *fs)
	Set the special inflow conditions for the small shock tube using Mirel's boundary layer theory. Nitrogen driving nitrogen.
int	set_FRANK_CYL_free_stream (double y_m, struct flow_state *fs)
	Set the special inflow conditions for Frank Houwing's cylinder in the Stanford shock tunnel.
int	init_profile_data (int ncell)
	Reads the flow state data from a previously written profile file.
int	init_transient_free_stream (void)
	Reads the flow state data from a previously written file.
int	set_transient_free_stream (double tt, struct flow_state *gsp)

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Detailed Description

Prototypes for boundary-condition functions.

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Function Documentation

int apply_inviscid_bc (  struct block_data *  A, FILE *  read_file, int *  n_vary, double *  t_old, double *  ta_old )

Set up ghost-cell values for the inviscid flux calculations. Parameters: A  : pointer to the single-block data structure read_file,:  pointer to the file for reading velocity profiles

int apply_inviscid_bc_east (  struct block_data *  A, FILE *  fp, int *  n, double *  t_old, double *  ta_old )

Set up ghost-cell values for the inviscid flux calculations EAST boundary. Parameters: A  : pointer to the single-block data structure fp  : pointer to the file for reading velocity profiles Version: 22-Sep-97 : replaced free_str with indexed gas_state[] Finally added SUP_IN 16-Nov-00 : tidied up to use copy functions 22-Aug-01 : SUBSONIC_IN condition

int apply_inviscid_bc_north (  struct block_data *  A, FILE *  fp, int *  n, double *  t_old, double *  ta_old )

Set up ghost-cell values for the inviscid flux calculations NORTH boundary. Parameters: A  : pointer to the single-block data structure fp  : pointer to the file for reading velocity profiles Version: 22-Sep-97 : replaced free_str with indexed gas_state[] 16-Nov-00 : tidied up to use copy functions 22-Aug-01 : SUBSONIC_IN condition

int apply_inviscid_bc_south (  struct block_data *  A, FILE *  fp, int *  n, double *  t_old, double *  ta_old )

Set up ghost-cell values for the inviscid flux calculations SOUTH boundary. Input... ----- A : pointer to the single-block data structure fp : pointer to the file for reading velocity profiles Revisions... --------- 22-Sep-97 : replaced free_str with indexed gas_state[] 16-Nov-00 : tidied up to use copy functions 22-Aug-01 : SUBSONIC_IN condition

int apply_inviscid_bc_west (  struct block_data *  A, FILE *  fp, int *  n, double *  t_old, double *  ta_old )

Set up ghost-cell values for the inviscid flux calculations WEST boundary. Parameters: A  : pointer to the single-block data structure fp  : pointer to the file for reading velocity profiles Version: 22-Sep-97 : replaced free_str with indexed gas_state[] 10-Dec-97 : Mirels inflow as SUP_IN condition 20-Dec-97 : Mirels inflow moved to SPECIAL condition 16-Nov-00 : tidied up to use copy functions 22-Aug-01 : SUBSONIC_IN condition

int apply_viscous_bc (  struct block_data *  A  )

Apply viscous boundary conditions to the boundary cell interfaces. NOTE, we will assume that the inviscid flux calculation has already computed values relevant to inviscid boundary conditions. Parameters: A  : pointer to the single-block data structure

int init_profile_data (  int  ncell  )

Reads the flow state data from a previously written profile file. The format expected of this file is that space-separated values are expected for p, u, v, T, f0, f1 ... for each cell with an extra line at the top to specify the number of cells in the profile. If there is only one species, just supplying values for p, u, v, T is adequate.

int init_transient_free_stream (  void   )

Reads the flow state data from a previously written file. The format expected of this file is space-separated values for t, p, u, v, T, f0, f1 ... for each cell with an extra line at the top to specify the number of time samples. If there is only one species, it is sufficient to supply values for p, u, v, T only.

int local_frame (  struct flow_state *  FS, double  cosX, double  cosY )

Change from a global (X,Y) frame of reference to a frame with its x-direction normal to the interface. The Riemann solver works in this local frame of reference. Parameters: FS  : pointer to a structure containing the local flow state cosX,cosY  : direction cosines for the interface.

int set_MIRELS_free_stream_HeN2 (  double  r, double  t, int  iturb, struct flow_state *  fs )

Set the special inflow conditions for the small shock tube using Mirel's boundary layer theory. Helium driving Nitrogen. This function is a bit wasteful of CPU time, but it is applied along one small boundary only. Parameters: r  : radial coordinate t  : simulation time (time after shock arrival at inflow boundary) iturb  : ==1 indicates turbulent boundary layer, else laminar fs  : pointer to the flow_state Version: 05-Dec-97 : initial coding using Drummond shock tube condition 08-Dec-97 : change the conditions to an ideal shock tube problem which approximates the Drummond tube condition 10-Dec-97 : turbulent/laminar option

int set_MIRELS_free_stream_N2N2 (  double  r, double  t, int  iturb, struct flow_state *  fs )

Set the special inflow conditions for the small shock tube using Mirel's boundary layer theory. Nitrogen driving nitrogen. This function is a bit wasteful of CPU time, but it is applied along one small boundary only. Parameters: r  : radial coordinate t  : simulation time (time after shock arrival at inflow boundary) iturb  : ==1 indicates turbulent boundary layer, else laminar fs  : pointer to the flow_state Version: 29-Nov-98: Adapted from the Helium driving Nitrogen version.

int subsonic_inflow_properties (  struct flow_state *  stagnation, struct flow_state *  inflow_state, double  inflow_velocity )

Given stagnation conditions, estimate the static conditions at the boundary cell. It is assumed that the velocity passed to this function is the inflow velocity (magnitude) of the cell just inside the boundary. Boundary condition developed by Rowan Gollan, 2001. These calculations are appropriate for a perfect gas, only.

int XY_frame (  struct flow_state *  FS, double  cosX, double  cosY )

Change from a frame of reference with its x-direction normal to the interface. to a global (X,Y) frame of reference. Parameters: FS  : pointer to a structure containing the local flow state cosX,cosY  : direction cosines for the interface.

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