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OTgeneral PatankarampSpalding exponentialpower scheme |
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August 11, 2008, 14:35 |
Hello,
I apologize for this
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#1 |
Senior Member
Mirko Vukovic
Join Date: Mar 2009
Posts: 159
Rep Power: 17 |
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 |
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August 13, 2008, 12:07 |
Just in case anyone else wonde
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#2 |
Senior Member
Mirko Vukovic
Join Date: Mar 2009
Posts: 159
Rep Power: 17 |
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} } |
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