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

Comparison of experimental and CFD results for the VA-2 supercritical airfoil

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 18, 2010, 14:02
Default Comparison of experimental and CFD results for the VA-2 supercritical airfoil
  #1
New Member
 
Join Date: Mar 2010
Posts: 2
Rep Power: 0
Aurélien is on a distinguished road
Dear Fluent users,

I am currently studying the supercritical airfoil VA-2 with Fluent in order to compare the results with some experimental data (drag coefficient, pressure distribution).

However I have some big differences between my results and the experimental data.
For my study, I am using:
- Spalart-Allmaras viscous model
- Pressure based solver
- M=0.75
- angle of attack = 0.6°
- Reynolds number = 6 millions

My main worry is about the turbulent inlet I have to put in the boundary conditions (pressure far-field).
When I am using the Turbulent intensity and Hydraulic diameter (I have found the values of the wind tunnel) I get a drag coefficient of 0.0205 instead of 0.0101.
When I am usins Turbulent intensity and Turbulent length scale, I get a drag coefficient of 0.0134.

I don't know how to explain this difference particularly for the first one.

Moreover when I am looking at my pressure distribution, I get a weak shock and I am not supposed to get one according to experimental data.


I hope it is enough clear as I am non-native English speaker.
If you need any other information or graph, ask me!!

Aurélien
Aurélien is offline   Reply With Quote

Old   May 6, 2013, 09:44
Default
  #2
Member
 
Join Date: Oct 2012
Posts: 47
Rep Power: 4
sh.d is on a distinguished road
hi
I am searching for experimental data for supercritical airfoil.can you send me your data?
sh.d is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Is it worth it? Jason Bardis Main CFD Forum 47 July 27, 2011 04:52
CFD vs Experimetal Results for Aerofoil aceofharts414 Main CFD Forum 0 April 22, 2009 07:14
validation of CFD results andy FLUENT 0 June 13, 2007 13:55
HELP! Experimental & numerical results don't agree Jenny Rollo FLUENT 5 April 23, 2006 14:12
Experimental Results of flow over a cylinder dhandapani.s CD-adapco 0 August 25, 2003 06:12


All times are GMT -4. The time now is 11:13.