prob/par_friction.c File Reference

Problem generator for particle code test, works for 2D and 3D. More...

Go to the source code of this file.

Functions
static Vector	ParticleTroj (Real t)
	Compute particle trajectory.
static Vector	ParticleVel (Real t)
	Compute particle velocity.
static int	ParticleLocator (Real x1, Real x2, Real x3)
	Judge if the particle is in this cpu.
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, const Real v1, const Real v2, const Real v3)
void	Userwork_in_loop (Grid *pGrid, Domain *pDomain)
void	Userwork_after_loop (Grid *pGrid, Domain *pDomain)
Variables
Real	x1c
Real	x2c
Real	x3c
Real	v01
Real	v02
Real	v03
Real	x1min
Real	x1max
Real	x2min
Real	x2max
Real	x3min
Real	x3max
char	name [50]

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Detailed Description

Problem generator for particle code test, works for 2D and 3D.

PURPOSE: Problem generator for particle code test, works for 2D and 3D. The fluid is set to be at rest. One test particle with initial velocity v0 is then stopped by the gas. This problem is used to test particle integrator performance in weak coupling regime.

• Configure --with-particle=passive --with-eos=isothermal

USERWORK_IN_LOOP function is used to output particle positions.

Definition in file par_friction.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 197 of file par_friction.c.

Gasfun_t get_usr_expr

(

const char *

expr

)

Sets pointer to expression for special output data.

Definition at line 182 of file par_friction.c.

VGFunout_t get_usr_out_fun

(

const char *

name

)

Returns a user defined output function pointer.

Definition at line 187 of file par_friction.c.

PropFun_t get_usr_par_prop

(

const char *

name

)

Returns a user defined particle selection function.

Definition at line 192 of file par_friction.c.

static int ParticleLocator	(	Real	x1,
		Real	x2,
		Real	x3
	)			[static]

Judge if the particle is in this cpu.

Definition at line 289 of file par_friction.c.

References x1lpar, x1upar, x2lpar, x2upar, x3lpar, and x3upar.

Referenced by problem().

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static Vector ParticleTroj

(

Real

t

)

[static]

Compute particle trajectory.

Definition at line 256 of file par_friction.c.

References tstop0, v01, v02, v03, x1c, x1max, x1min, x2c, x2max, x2min, x3c, x3max, and x3min.

Referenced by Userwork_in_loop().

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static Vector ParticleVel

(

Real

t

)

[static]

Compute particle velocity.

Definition at line 276 of file par_friction.c.

References tstop0, v01, v02, v03, and vel.

Referenced by Userwork_in_loop().

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void problem	(	Grid *	pGrid,
		Domain *	pDomain
	)

Definition at line 52 of file par_friction.c.

References ath_error(), name, par_getd(), par_geti(), particle_realloc(), ParticleLocator(), tstop0, v01, v02, v03, x1c, x1max, x1min, x2c, x2max, x2min, x3c, x3max, and x3min.

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

Definition at line 159 of file par_friction.c.

References name, par_getd(), v01, v02, v03, x1c, x1max, x1min, x2c, x2max, x2min, x3c, x3max, and x3min.

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

Definition at line 153 of file par_friction.c.

References name.

void Userforce_particle	(	Vector *	ft,
		const Real	x1,
		const Real	x2,
		const Real	x3,
		const Real	v1,
		const Real	v2,
		const Real	v3
	)

Definition at line 203 of file par_friction.c.

void Userwork_after_loop	(	Grid *	pGrid,
		Domain *	pDomain
	)

Definition at line 246 of file par_friction.c.

void Userwork_in_loop	(	Grid *	pGrid,
		Domain *	pDomain
	)

Definition at line 210 of file par_friction.c.

References name, ParticleTroj(), and ParticleVel().

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Variable Documentation

char name[50]

Definition at line 45 of file par_friction.c.

Real v01

Definition at line 43 of file par_friction.c.

Referenced by ParticleTroj(), ParticleVel(), problem(), and problem_read_restart().

Real v02

Definition at line 43 of file par_friction.c.

Referenced by ParticleTroj(), ParticleVel(), problem(), and problem_read_restart().

Real v03

Definition at line 43 of file par_friction.c.

Referenced by ParticleTroj(), ParticleVel(), problem(), and problem_read_restart().

Real x1c

Definition at line 43 of file par_friction.c.

Real x1max

Definition at line 44 of file par_friction.c.

Real x1min

Definition at line 44 of file par_friction.c.

Real x2c

Definition at line 43 of file par_friction.c.

Real x2max

Definition at line 44 of file par_friction.c.

Real x2min

Definition at line 44 of file par_friction.c.

Real x3c

Definition at line 43 of file par_friction.c.

Real x3max

Definition at line 44 of file par_friction.c.

Real x3min

Definition at line 44 of file par_friction.c.