CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > Siemens > STAR-CCM+

CFD results not close to experimental results

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

LinkBack Thread Tools Search this Thread Display Modes
Old   July 8, 2013, 07:53
Post CFD results differs experimental results
New Member
Armand Fourie
Join Date: Jul 2013
Posts: 1
Rep Power: 0
cider is on a distinguished road

Hope someone will be able to help me. I have to simulate the flow around a bluff body (bicycle with aerodynamic body around it) and then compare it to the wind tunnel results. I only have the CdA (drag area) value from the wind tunnel results. I therefore run a force report and then use the following equation in order to get the CdA value for my sim

F = (0.5*rho*V^2) * (CdA)

I then use the frontal area to work out a value for the drag coefficient (Cd). My sim runs correctly (has already been verified by a STAR CCM+ expert) but the value i eventually get for Cd is about half of what the wind tunnel results are.

Has anyone experienced this same problem?

Last edited by cider; July 8, 2013 at 09:21.
cider is offline   Reply With Quote


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
Mapping results from CFD grid to structural grid of a free-form surface mbecker OpenFOAM Running, Solving & CFD 1 October 18, 2013 10:16
Future CFD Research Jas Main CFD Forum 10 March 30, 2013 12:26
CFD vs Experimetal Results for Aerofoil owhelan Main CFD Forum 3 March 25, 2010 10:54
CFD vs Experimetal Results for Aerofoil owhelan FLUENT 0 March 25, 2010 07:03
Circular miniFlume experimental amp numerical results amelia OpenFOAM Running, Solving & CFD 11 September 4, 2005 22:42

All times are GMT -4. The time now is 12:34.