|July 14, 2014, 08:20||
Entropy generation in inviscid model
Join Date: Mar 2010
Posts: 10Rep Power: 8
I obverse non negligible entropy generation/stagnation pressure loss near the walls in inviscid model of Fluent.
I also checked this in laminar model and setting viscosity and thermal conductivity as almost zero (1e-16) and specified zero shear stress at the walls (Euler wall). Artificially generated entropy is still there. So this is also a problem in viscous solutions: near wall regions are problematic!!
All pressure based solvers and some of density based solver models are tried, nothing changes significantly.
Effect is reduced with the use of PRESTO and third order Muscl/QUICK schemes, but deficit is still there and has non-negligible effect.
Is there anyone who is aware of this error and its elimination?
Last edited by sercan85; July 15, 2014 at 04:37.
|Thread||Thread Starter||Forum||Replies||Last Post|
|entropy generation with UDF||mohammadkm||Fluent UDF and Scheme Programming||18||February 26, 2016 10:14|
|DPM model w/ Wave model - errors in documentation||HS||FLUENT||0||April 12, 2006 04:37|
|Who knows about 'maximum entropy formalism' model||littlelz||Main CFD Forum||0||October 10, 2003 11:36|
|Inviscid flow calculator, Entropy rise?!!||MJK||Main CFD Forum||3||April 9, 2003 03:36|
|Latest news in mesh generation||Robert Schneiders||Main CFD Forum||0||March 2, 1999 05:07|