CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

Turbulent DFSEM reynolds stress calculation

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 1, 2019, 09:23
Default Turbulent DFSEM reynolds stress calculation
  #1
Member
 
ssa
Join Date: Sep 2018
Posts: 60
Rep Power: 3
ssa_cfd is on a distinguished road
Hi all,

I am using turbulentdfsem boundary condition in LES pimpleFoam. I had experimental wind tunnel data for two velocity components ( u and w). I could get an matching velocity profile from the simulation with the experimental data.

But the reynolds stresses are very low. I tried to calculate using UPrime2Mean and also by postProcess -func R. Both are not matching with experimental data.

Since I had only two velocity components, I could calculate only three reynolds stress components(uu, ww and uw). The remaining I considered as 0.5. Does it affect the simulation values of reynolds stresses.? But I could get almost a very good velocity profile.

Does anyone have similar problem with turbulentDFSEM.? and is UPrime2Mean at the last stable time step can be considered as the reynolds stresses.? or something else should be done to calculate reynolds stresses.
ssa_cfd is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
New implemented algebraic Reynolds stress model volker OpenFOAM 13 October 21, 2013 01:01
Question regarding Reynolds Number and Turbulent Intensity maxj Main CFD Forum 4 March 5, 2013 07:16
SSG Reynolds Stress Turbulent Source on Boundary st268 CFX 3 September 11, 2012 08:24
Reynolds Stress Models Jade M Main CFD Forum 0 April 21, 2010 17:38
Warning 097- AB Siemens 6 November 15, 2004 05:41


All times are GMT -4. The time now is 10:47.