matrxv.f90 File Reference

This function builds the matrix of advection/diffusion for a vector field. More...

Functions/Subroutines
subroutine	matrxv

Detailed Description

This function builds the matrix of advection/diffusion for a vector field.

The advection is upwind, the diffusion is not reconstructed. The matrix is splitted into a diagonal block (3x3 times number of cells) and an extra diagonal part (of dimension 2 time the number of internal faces).

Function/Subroutine Documentation

subroutine matrxv

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Parameters

[in]	ncelet	number of extended (real + ghost) cells
[in]	ncel	number of cells
[in]	nfac	number of interior faces
[in]	nfabor	number of boundary faces
[in]	iconvp	indicator 1 advection 0 otherwise
[in]	idiffp	indicator 1 diffusion 0 otherwise
[in]	ndircp	indicator 0 if the diagonal stepped aside
[in]	isym	indicator 1 symmetric matrix 2 non symmmetric matrix
[in]	thetap	weightening coefficient for the theta-schema, thetap = 0: explicit scheme thetap = 0.5: time-centred scheme (mix between Crank-Nicolson and Adams-Bashforth) thetap = 1: implicit scheme
[in]	ifacel	cell indexes of interior faces
[in]	ifabor	no de l'elt voisin d'une face de bord
[in]	coefbu	boundary condition array for the variable (Impplicit part - 3x3 tensor array)
[in]	cofbfu	boundary condition array for the variable flux (Impplicit part - 3x3 tensor array)
[in]	flumas	mass flux at interior faces
[in]	flumab	mass flux at border faces
[in]	viscf	at interior faces for the matrix
[in]	viscb	at border faces for the matrix
[out]	da	diagonal part of the matrix
[out]	xa	extra interleaved diagonal part of the matrix

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