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

Vortex Shedding in low Reynold's Number 2D airfoil

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 1, 2014, 02:22
Default Vortex Shedding in low Reynold's Number 2D airfoil
  #1
New Member
 
Join Date: Feb 2014
Posts: 6
Rep Power: 12
Pacer is on a distinguished road
Hi

I was simulating flow on a low Reynold's Number airfoil, eppler387. I have taken the Re No. as 60000 and angle of attack 4 degrees. In these conditions vortex shedding is supposed to occur. I simulated the problem using 3 Eq turbulence model K-Kl-w keeping laminar kinetic energy 1e-6, turbulence intensity 1% and turbulence length scale 0.0008. The results were good and I got behavior that was expected. However when I change to the 4 eq model Transition SST, I didnt
get the expected vortex shedding. As I do not have a lot of background knowledge on the subject I was wondering what might be the reason of such behavior?


3 Equation Model


4 Equation Model
Pacer is offline   Reply With Quote

Old   February 5, 2014, 05:20
Default
  #2
New Member
 
Join Date: Jan 2014
Posts: 5
Rep Power: 12
atulurade is on a distinguished road
you should go through the basics books of cfd you will get your answer or also you get it in fluid dynamics books..
atulurade is offline   Reply With Quote

Reply

Tags
2d airfoil, low reynold's number, transition, transition sst, vortex shedding

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
turbulent lodel at low Reynolds number mayj CFX 2 October 7, 2013 04:10
Simulation of 0021 airfoil at 120,000 Reynolds number AUCH FLUENT 0 September 25, 2013 00:05
DecomposePar unequal number of shared faces maka OpenFOAM Pre-Processing 6 August 12, 2010 10:01
Low Reynolds Number Instability in icoFoam - Cavity Case kmooney OpenFOAM Running, Solving & CFD 2 October 8, 2009 15:09
Multicomponent fluid Andrea CFX 2 October 11, 2004 06:12


All times are GMT -4. The time now is 10:02.