CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > CFX

validating turbulence model on flow around a car

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

LinkBack Thread Tools Search this Thread Display Modes
Old   February 20, 2008, 12:36
Default validating turbulence model on flow around a car
Posts: n/a

I need assistance as I must validate the turbulence model Im using for the flow around a car. As for now I made all the simulations with the SST, and I have made the comparison by making these again but with the K epsilon model.

I took notes of the aerodynamic coefficients Cd, Cl, and velocity profiles in several streamlines around the vehicle. I compare them against each other and see no big difference but I believe this is not enough for succesful SST validation; they must be compared to another model of known solution. I read in the archives about the ahmed model but I fail to understand the way you use it to validate your own car.

APART from experimental data comparisons, how do you validate the turb model?

  Reply With Quote

Old   February 20, 2008, 16:32
Default Re: validating turbulence model on flow around a c
Glenn Horrocks
Posts: n/a

As you mention, there is plenty of good data in the literature on the Ahmed body. This body is specifically designed to be car-like, so if your model does the Ahmed body well it should do most car shapes well.

Regards, Glenn Horrocks
  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
mass flow in is not equal to mass flow out saii CFX 12 March 19, 2018 05:21
Turbulence model for low Reynolds number flow? Nokadu Main CFD Forum 3 May 26, 2013 11:42
Turbulence model for Laminar flow Terry Main CFD Forum 8 August 14, 2010 05:45
turbulence model simulation in unsteady flow Chang Main CFD Forum 2 February 12, 2005 06:28
Turbulence model for Transient Pipe Flow Modeling Brian FLUENT 0 June 7, 2002 12:15

All times are GMT -4. The time now is 10:39.