prob/firehose.c File Reference

Problem generator for firehose test of Braginskii viscosity. More...

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Functions
static double	ran2 (long int *idum)
	Extracted from the Numerical Recipes in C (version 2) code.
static void	pbc_ix1 (Grid *pGrid)
	Special PERIODIC boundary conditions, Inner x1 boundary.
static void	pbc_ox1 (Grid *pGrid)
	Special PERIODIC boundary conditions, Outer x1 boundary.
void	problem (Grid *pGrid, Domain *pDomain)
void	problem_write_restart (Grid *pG, Domain *pD, FILE *fp)
void	problem_read_restart (Grid *pG, Domain *pD, FILE *fp)
Gasfun_t	get_usr_expr (const char *expr)
	Sets pointer to expression for special output data.
VGFunout_t	get_usr_out_fun (const char *name)
	Returns a user defined output function pointer.
PropFun_t	get_usr_par_prop (const char *name)
	Returns a user defined particle selection function.
void	gasvshift (const Real x1, const Real x2, const Real x3, Real *u1, Real *u2, Real *u3)
	Gas velocity shift.
void	Userforce_particle (Vector *ft, const Real x1, const Real x2, const Real x3, Real *w1, Real *w2, Real *w3)
void	Userwork_in_loop (Grid *pGrid, Domain *pDomain)
void	Userwork_after_loop (Grid *pGrid, Domain *pDomain)

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Detailed Description

Problem generator for firehose test of Braginskii viscosity.

PURPOSE: Problem generator for firehose test of Braginskii viscosity.

• iprob=1: vortex test suggested by Steve Cowley, developed by Greg Hammett
• iprob=2: shear test from Appendix C.3.4 in Prateek Sharma's thesis.

PRIVATE FUNCTION PROTOTYPES:

• ran2() - random number generator from NR
• pbc_ix1() - sets BCs on L-x1 (left edge) of grid used in shear test
• pbc_ox1() - sets BCs on R-x1 (right edge) of grid used in shear test

Definition in file firehose.c.

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Function Documentation

void gasvshift	(	const Real	x1,
		const Real	x2,
		const Real	x3,
		Real *	u1,
		Real *	u2,
		Real *	u3
	)

Gas velocity shift.

Definition at line 195 of file firehose.c.

Referenced by feedback_predictor(), Get_Drag(), and Get_Term().

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Gasfun_t get_usr_expr

(

const char *

expr

)

Sets pointer to expression for special output data.

Definition at line 180 of file firehose.c.

VGFunout_t get_usr_out_fun

(

const char *

name

)

Returns a user defined output function pointer.

Definition at line 185 of file firehose.c.

PropFun_t get_usr_par_prop

(

const char *

name

)

Returns a user defined particle selection function.

Definition at line 190 of file firehose.c.

Referenced by init_output().

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static void pbc_ix1

(

Grid *

pGrid

)

[static]

Special PERIODIC boundary conditions, Inner x1 boundary.

Definition at line 299 of file firehose.c.

References ju, ku, Lx, par_getd(), xmax, and xmin.

Referenced by problem().

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static void pbc_ox1

(

Grid *

pGrid

)

[static]

Special PERIODIC boundary conditions, Outer x1 boundary.

Definition at line 362 of file firehose.c.

References ju, ku, Lx, par_getd(), xmax, and xmin.

Referenced by problem().

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void problem	(	Grid *	pGrid,
		Domain *	pDomain
	)

Definition at line 39 of file firehose.c.

References amp, ath_error(), B0, cc_pos(), d0, Gamma_1, iprob, left_x1, Lx, nx1, nx2, p0, par_getd(), pbc_ix1(), pbc_ox1(), ran2(), right_x1, x1max, and x1min.

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void problem_read_restart	(	Grid *	pG,
		Domain *	pD,
		FILE *	fp
	)

Definition at line 175 of file firehose.c.

void problem_write_restart	(	Grid *	pG,
		Domain *	pD,
		FILE *	fp
	)

Definition at line 170 of file firehose.c.

double ran2

(

long int *

idum

)

[static]

Extracted from the Numerical Recipes in C (version 2) code.

Modified to use doubles instead of floats. -- T. A. Gardiner -- Aug. 12, 2003

Long period (> 2 x 10^{18}) random number generator of L'Ecuyer with Bays-Durham shuffle and added safeguards. Returns a uniform random deviate between 0.0 and 1.0 (exclusive of the endpoint values). Call with idum = a negative integer to initialize; thereafter, do not alter idum between successive deviates in a sequence. RNMX should appriximate the largest floating point value that is less than 1.

Definition at line 245 of file firehose.c.

Referenced by Normal(), problem(), and pspect().

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void Userforce_particle	(	Vector *	ft,
		const Real	x1,
		const Real	x2,
		const Real	x3,
		Real *	w1,
		Real *	w2,
		Real *	w3
	)

Definition at line 201 of file firehose.c.

Referenced by Get_Force(), and Get_ForceDiff().

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void Userwork_after_loop	(	Grid *	pGrid,
		Domain *	pDomain
	)

Definition at line 212 of file firehose.c.

void Userwork_in_loop	(	Grid *	pGrid,
		Domain *	pDomain
	)

Definition at line 208 of file firehose.c.