rsolvers/hlle_sr.c File Reference

Compute 1D fluxes using an HLLE-type relativistic Riemann solver. More...

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Functions
void	flux_LR (Cons1DS U, Prim1DS W, Cons1DS *flux, Real Bx, Real *p)
void	getMaxSignalSpeeds_pluto (const Prim1DS Wl, const Prim1DS Wr, const Real Bx, Real *low, Real *high)
void	getMaxSignalSpeeds_echo (const Prim1DS Wl, const Prim1DS Wr, const Real Bx, Real *low, Real *high)
void	getVChar_echo (const Prim1DS W, const Real Bx, Real *lml, Real *lmr)
void	getVChar_pluto (const Prim1DS W, const Real Bx, Real *lml, Real *lmr)
int	QUARTIC (Real b, Real c, Real d, Real e, Real z[])
int	CUBIC (Real b, Real c, Real d, Real z[])
void	fluxes (const Cons1DS Ul, const Cons1DS Ur, const Prim1DS Wl, const Prim1DS Wr, const Real Bx, Cons1DS *pFlux)
	Calculates fluxes of CONSERVED variables.
void	entropy_flux (const Cons1DS Ul, const Cons1DS Ur, const Prim1DS Wl, const Prim1DS Wr, const Real Bx, Real *pFlux)
	Calculate entropy flux.

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Detailed Description

Compute 1D fluxes using an HLLE-type relativistic Riemann solver.

PURPOSE: Compute 1D fluxes using an HLLE-type relativistic Riemann solver. Works for both hydro and MHD, but is very diffusive.

HISTORY:

• First version written by Kevin Tian, 2007
• Updated by Jonathan Fulton, February 2009

CONTAINS PUBLIC FUNCTIONS:

• fluxes() - all Riemann solvers in Athena must have this function name and use the same argument list as defined in rsolvers/prototypes.h

Definition in file hlle_sr.c.

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Function Documentation

int CUBIC	(	Real	b,
		Real	c,
		Real	d,
		Real	z[]
	)

Definition at line 726 of file hlle_sr.c.

References f, and n.

void entropy_flux	(	const Cons1DS	Ul,
		const Cons1DS	Ur,
		const Prim1DS	Wl,
		const Prim1DS	Wr,
		const Real	Bx,
		Real *	pFlux
	)

Calculate entropy flux.

Compute entropy flux.

Definition at line 218 of file hlle_sr.c.

References Cons1DS::d, Prim1DS::d, Gamma, getMaxSignalSpeeds_echo(), getMaxSignalSpeeds_pluto(), Prim1DS::P, Pl, Pr, and Prim1DS::Vx.

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void flux_LR	(	Cons1DS	U,
		Prim1DS	W,
		Cons1DS *	flux,
		Real	Bx,
		Real *	p
	)

Definition at line 324 of file hlle_sr.c.

References Cons1DS::By, Prim1DS::By, Cons1DS::Bz, Prim1DS::Bz, Cons1DS::d, Prim1DS::d, Cons1DS::E, Gamma, Gamma_1, Cons1DS::Mx, Cons1DS::My, Cons1DS::Mz, Prim1DS::P, theta, Prim1DS::Vx, Prim1DS::Vy, and Prim1DS::Vz.

void fluxes	(	const Cons1DS	Ul,
		const Cons1DS	Ur,
		const Prim1DS	Wl,
		const Prim1DS	Wr,
		const Real	Bx,
		Cons1DS *	pFlux
	)

Calculates fluxes of CONSERVED variables.

Computes 1D fluxes Input Arguments:

• Bxi = B in direction of slice at cell interface
• Ul,Ur = L/R-states of CONSERVED variables at cell interface Output Arguments:
• pFlux = pointer to fluxes of CONSERVED variables at cell interface.

Computes 1D fluxes.

Compute 1D fluxes Input Arguments:

• Bxi = B in direction of slice at cell interface
• Ul,Ur = L/R-states of CONSERVED variables at cell interface.

Computes 1D fluxes Input Arguments:

• Ul,Ur = L/R-states of CONSERVED variables at cell interface
• Wl,Wr = L/R-states of PRIMITIVE variables at cell interface Output Arguments:
• pFlux = pointer to fluxes of CONSERVED variables at cell interface.

Computes 1D fluxes Input Arguments:

• Ul,Ur = L/R-states of CONSERVED variables at cell interface Output Arguments:
• pFlux = pointer to fluxes of CONSERVED variables at cell interface.

Computes 1D fluxes Input Arguments:

• Bxi = B in direction of 1D slice at cell interface
• Ul,Ur = L/R-states of CONSERVED variables at cell interface Output Arguments:
• pFlux = pointer to fluxes of CONSERVED variables at cell interface.

Computes 1D fluxes using exact special relativistic Riemann solver.

Computes fluxes of CONSERVES variables.

Input Arguments:

• Bxi = B in direction of slice at cell interface
• Ul,Ur = L/R-states of CONSERVED variables at cell interface Output Arguments:
• pFlux = pointer to fluxes of CONSERVED variables at cell interface

Input Arguments:

• Bxi = B in direction of slice at cell interface
• Ul,Ur = L/R-states of CONSERVED variables at cell interface Output Arguments:
• pF = pointer to fluxes of CONSERVED variables at cell interface

Input Arguments:

• Ul,Ur = L/R-states of CONSERVED variables at cell interface
• Bx = B in direction of slice at cell interface Output Arguments:
• pF = pointer to fluxes of CONSERVED variables at cell interface

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Output Arguments:

• Flux = fluxes of CONSERVED variables at cell interface

Input Arguments:

• Ul,Ur = L/R-states of CONSERVED variables at cell interface
• Bx = B in direction of slice at cell interface Output Arguments:
• pFlux = pointer to fluxes of CONSERVED variables at cell interface

Definition at line 64 of file hlle_sr.c.

References Cons1DS::By, Cons1DS::Bz, Cons1DS::d, Cons1DS::E, flux_LR(), getMaxSignalSpeeds_echo(), getMaxSignalSpeeds_pluto(), Cons1DS::Mx, Cons1DS::My, Cons1DS::Mz, Pl, and Pr.

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void getMaxSignalSpeeds_echo	(	const Prim1DS	Wl,
		const Prim1DS	Wr,
		const Real	Bx,
		Real *	low,
		Real *	high
	)

Definition at line 527 of file hlle_sr.c.

References getVChar_echo().

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void getMaxSignalSpeeds_pluto	(	const Prim1DS	Wl,
		const Prim1DS	Wr,
		const Real	Bx,
		Real *	low,
		Real *	high
	)

Definition at line 377 of file hlle_sr.c.

References getVChar_pluto().

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void getVChar_echo	(	const Prim1DS	W,
		const Real	Bx,
		Real *	lml,
		Real *	lmr
	)

Definition at line 542 of file hlle_sr.c.

References b0, Prim1DS::By, Prim1DS::Bz, Prim1DS::d, Gamma, Gamma_1, Prim1DS::P, Prim1DS::Vx, Prim1DS::Vy, and Prim1DS::Vz.

void getVChar_pluto	(	const Prim1DS	W,
		const Real	Bx,
		Real *	lml,
		Real *	lmr
	)

Definition at line 392 of file hlle_sr.c.

References b0, Prim1DS::By, Prim1DS::Bz, Prim1DS::d, Gamma, Gamma_1, lambda, Prim1DS::P, Q, QUARTIC(), Prim1DS::Vx, Prim1DS::Vy, and Prim1DS::Vz.

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int QUARTIC	(	Real	b,
		Real	c,
		Real	d,
		Real	e,
		Real	z[]
	)

Definition at line 626 of file hlle_sr.c.

References CUBIC(), f, n, q, r, and s.

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