|November 25, 2015, 16:11||
Join Date: Aug 2015
Posts: 18Rep Power: 3
Hi, i have tested two turbulence models and just have a question about differences in solution.
I am modelling flow through a 2D compressor cascade.
Firstly i use k-omega turbulence and get a converging solution, however pressure values seem quite high.
However for some profiles i can't get a converging solution so i try SST-Transition and get a converging solution.
From this Pressure values seem more reasonable and velocity values are similar to that of the k-omega results.
I was wondering if anyone had any ideas on the differences observed between the two models?
(Note. 2D steady model, compressible, transonic flow with periodic boundaries).
I hope this is clear.
|November 25, 2015, 17:01||
Join Date: May 2015
Posts: 47Rep Power: 3
The k-w model and the SST model are similar. the SST model blends the k-w model at the wall, and uses k-e model in the bulk. this plays to the strengths of the two models; k-w allows the flow to solve the boundary layer without relying on a wall function, while k-e model is more stable than k-w in the bulk.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Turbulence postprocessing||Mohsin||FLUENT||2||October 3, 2016 14:18|
|Turbulence length scale||Leonpolou||FLUENT||2||January 23, 2013 08:26|
|How to implement turbulence in one Solver???||vahid.najafi||OpenFOAM Programming & Development||0||July 29, 2012 05:46|
|Code release: Flow Transition and Turbulence||Chaoqun Liu||Main CFD Forum||0||September 26, 2008 17:15|
|How's going on with Turbulence Research?||Daniel||Main CFD Forum||1||June 20, 2008 23:44|