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Revision 722dbd95a4352965cd1492a15c6e07ddbb073986 authored by Karline Soetaert on 13 November 2009, 00:00:00 UTC, committed by Gabor Csardi on 13 November 2009, 00:00:00 UTC
version 1.2
1 parent c455f23
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fiadeiro.R

##==============================================================================
## The Fiadeiro and Veronis scheme: advective finite difference weights (AFDW)
##==============================================================================

fiadeiro <- function(v, D, dx.aux=NULL, grid=list(dx.aux=dx.aux)) {

  Pe    <- abs(v)*grid$dx.aux/D
  sigma <- (1+(1/tanh(Pe)-1/Pe))/2
  return(sigma)
}
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