|December 10, 2012, 03:59||
why different models lead to different result for a same low-Re RAS case?
Join Date: Sep 2012
Posts: 77Rep Power: 5
I am simulating a 2D channel flow using pisoFoam solver.
At the beginning, I used the LaunderSharmaKE model to solve the case and I got a good reslut. Then I calculated the y+, u+ and u_tau() using plusPostRANSUtility downloaded in the thread---"y+ and u+ values with low-Re RANS turbulence models: utility +testcase" However, the u_tau is higher than the value from the counterpart experiment. So I changed the model to LienLeschzinerLowRe to get a better result. However,the result didn't get better but worse than the former one.
Now I want to know what are the factors that make the different reslut.
Thanks for any reply.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Turbulence Models for very low Reynolds Numbers||Sudhi||CFX||1||March 2, 2007 19:03|
|Free surface boudary conditions with SOLA-VOF||Fan||Main CFD Forum||10||September 9, 2006 12:24|
|Turbulent Flat Plate Validation Case||Jonas Larsson||Main CFD Forum||0||April 2, 2004 10:25|
|FLUENT for low pressure case||Jim||FLUENT||1||March 30, 2004 12:11|
|Body force - Does it work?||Jan Rusås||CFX||5||August 27, 2002 09:50|