Hello, I apologize for this
 

Hello,

I apologize for this off-topic question, but not being an expert in Navier Stokes numerical simulation I am having trouble resolving the following issue.

From Patankar & Spaldings book one gets the impression that the power scheme for the coefficients of the convection&diffusion problems affords a large grid spacing.

But reading the newer books (Ferziger & Peric or Oran & Boris), I did not find the discussion of this approach. Ferziger & Peric on p. 64 seem to disparage methods that are based on addressing the pure convection/diffusion problem.

I assume that these gentlemen know much more about the subject than I do and have very good reasons for skipping the Patankar/Spalding scheme.

Can someone please point me to some references that discuss the downside of their scheme?

Thank you,

Mirko

Just in case anyone else wonde
 

Just in case anyone else wonders about the same questions, I found answers on http://www.cfd-online.com, in particular pointing to the following article:

@article{leonard1995ysn,
title={{Why you should not use `hybrid', `power-law' or related exponential schemes for convective modelling--there are much better alternatives}},
author = {Leonard, BP and Drummond, JE},
journal = {International Journal for Numerical Methods in Fluids},
volume = {20},
pages = {421--442},
year = {1995}
}