NAME
Diffuse_fluxLimiter
SYNOPSIS
call Diffuse_fluxLimiter(integer(in) :: idcoef,
integer(in) :: ifunc,
integer(in) :: ifl,
integer(in) :: mode,
integer(IN) :: blkcnt,
integer(IN) :: blklst(blkcnt))
DESCRIPTION
This routine modifies the diffusion coefficient (idcoef)
and applies limiting.
ARGUMENTS
idcoef : index into solution vector, indicating a variable that holds
the coefficient to which the limiter is applied.
This variable is used for input and output.
ifunc : index into solution vector giving the quantity whose flux
is to be limited.
This variable is used only for input.
ifl : index into solution vector giving flux limiter variable.
This variable is used for input and output.
mode : Flux limiter mode.
blkcnt : The number of blocks in the list
blklst : The list of blocks on which the solution must be updated.
SIDE EFFECTS
Modifies the diffusion coefficient variable, indicated by the argument idcoef. Modifies the flux limiter variable, indicated by the argument ifl. On output it will be overwritten with a value three times the flux limiter factor lambda, which should be familiar from the literature on flux limiters. The value of a flux limiter factor lambda should be in the range ( 0, 1/3 ]. Thus the value returned in variable ifl of the solution vector will be in the range [ 0.0, 1.0 ].
NOTES
Results for idcoef and ifl are returned for interior cells and additionally one layer of guard cells. Valid input data in ifunc is required in one layers of guard cells. The caller is responsible for ensuring that this requirement is met, for example by calling Grid_fillGuardCells before calling this routine.