CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

modeling turbulent duct flow

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 1, 2014, 13:12
Default modeling turbulent duct flow
  #1
New Member
 
hithesh
Join Date: Dec 2014
Posts: 1
Rep Power: 0
hitheshuw is on a distinguished road
i am new to cfd , i want to do simulation on turbulent flow in ducts with vortex generator ,to get heat transfer and friction charaterstics.kindly suggest best turbulence model....as vortex generator is inserted ,it involves local flow seperation..so is it ok to try with standard RNG k-epsilon with enhanced wall fn??
hitheshuw is offline   Reply With Quote

Old   December 1, 2014, 19:10
Default
  #2
Senior Member
 
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,654
Rep Power: 65
LuckyTran has a spectacular aura aboutLuckyTran has a spectacular aura aboutLuckyTran has a spectacular aura about
I've seen a lot of kw-SST for vortex generators. I've had reasonable results from realizable k-epsilon with enhanced wall functions as well. I don't have much experience with the RNG models, so I cannot say.

On a technicality note, I don't consider the purpose of inserting vortex generators to be the generation of stable separation bubbles but rather the generation of a stable secondary flow (or vortex). For that reason, I would target models that handle secondary flows well and not necessarily separated flow. But there is always the possibility of separated flow, so catch 22.
LuckyTran 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
About Some Concepts:Laminar flow, turbulent flow, steady flow and time-dependent flow Jing Main CFD Forum 8 October 5, 2018 18:02
Modeling Turbulent Reactive Flow sanjibdsharma OpenFOAM 45 May 16, 2016 02:42
Turbulent flow in duct marauder FLUENT 11 December 11, 2015 08:18
LBM Vs navier stokes equations in turbulent fluid flow modeling. sharad_shevate Main CFD Forum 0 August 3, 2009 02:25
flow simulation across a small fan jane luo Main CFD Forum 15 April 12, 2004 18:49


All times are GMT -4. The time now is 04:30.