flux.h File Reference

Header file for numerical flux funtions. More...

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Functions
void	ns_flux_container (int nfvars, int ndims, double *u, double *nf, double *f)
	Computes flux for Navier-Stokes equations. More...
void	rans_flux_container (int nfvars, int ndims, int nturbvars, double *u, double *nf, double *f)
	Computes flux for RANS equations. More...
int	rans_source_jacobian (int nvars, int ntvars, double betast, double *uf, double *tmat, double *dsrc)
	Computes source term Jacobian matrix for RANS equations. More...

Detailed Description

Header file for numerical flux funtions.

Declaration of convective flux for Navier-Stokes and RANS equations.

Definition in file flux.h.

Function Documentation

ns_flux_container()

void ns_flux_container	(	int	nfvars,
		int	ndims,
		double *	u,
		double *	nf,
		double *	f
	)

Computes flux for Navier-Stokes equations.

Parameters

nfvars	Number of flux variables
ndims	Dimensions
u	Conservative vector
nf	Surface vector
f	Flux vector

Computes Euler/Navier-Stokes flux vector.
Jacobian matrix is replaced by first-order flux function, typically Rusanov flux is implemented.
Therefore, only convective flux is used.

Variable description :
rho : Density
et : Total Energy
temp : \(\rho^2 \times (u^2 + v^2)\)
contrav : Contravariant velocity

Definition at line 37 of file flux.c.

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rans_flux_container()

void rans_flux_container	(	int	nfvars,
		int	ndims,
		int	nturbvars,
		double *	u,
		double *	nf,
		double *	f
	)

Computes flux for RANS equations.

Parameters

nfvars	Number of flux variables
ndims	Dimensions
nturbvars	Number of turbulence variables
u	Conservative vector
nf	Surface vector
f	Flux vector

Computes convective flux for RANS one- or two-equations.
Similar to the Navier-Stokes equations, RANS equations can be reformulated into the finite-volume framework.
It contains conservative variables, convective/viscous flux, and source term. Convective flux in RANS equations is computed simply by multiplying conservative variables and contravariant velocity.

Definition at line 85 of file flux.c.

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rans_source_jacobian()

int rans_source_jacobian	(	int	nvars,
		int	ntvars,
		double	betast,
		double *	uf,
		double *	tmat,
		double *	dsrc
	)

Computes source term Jacobian matrix for RANS equations.

Parameters

nvars	Number of conservative variables
ntvars

Definition at line 101 of file flux.c.

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