|June 13, 2012, 11:13||
simpleFoam: Problem with k-omega Model near Wall
Join Date: Oct 2011
Posts: 14Rep Power: 4
I have a problem with the k-omega turbulence model, especially concerning the k-Value of my case. Im comparing openFOAM to fluent which you can see on the left side on each picture. The problem is that k seems to develop quite as good as in fluent at the inlet flow, but as the flow gets to the profile, k gets lower. (In this area the mesh is finer than at the inlet, might this be of importance?). Did someone have similar Problems with the k-omega model?
PS: I tried some calculations with second order divSchemes(instead of first), but they didn't converge well.
The boundaries at the top and bottom are periodic until the profile appears. The problem is that at fluent, k on the left and right wall is much more intense than in openFOAM.
What you see on the pictures is the Inlet with different slices plotted streamwise on the way onto the profile.
On the left: Fluent
On the right: OpenFOAM
I'd be really glad to get some help here!
|Thread||Thread Starter||Forum||Replies||Last Post|
|Use of k-epsilon and k-omega Models||Jade M||Main CFD Forum||10||Yesterday 04:04|
|Problem with zeroGradient wall BC for temperature - Total temperature loss||cboss||OpenFOAM||9||January 28, 2013 14:11|
|UDF for wall slipping||HFLUENT||Fluent UDF and Scheme Programming||0||April 27, 2011 13:03|
|lenght and number of nodes for an orifice meter flow problem - k-eps model||fofo||FLUENT||0||November 15, 2009 04:49|
|Multicomponent fluid||Andrea||CFX||2||October 11, 2004 06:12|