CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Help to understand these two images

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

LinkBack Thread Tools Display Modes
Old   March 11, 2006, 08:01
Default Help to understand these two images
Posts: n/a
Hi all!

I've been reading successful cases in Fluent web site about external aerodynamics developements in the shape of cars to reduce the drag. Particulary, I read about the Eco-Roadster by Opel and an Opel Astra and in both texts it is showed a plot of an iso-surface of ptot=0 coloured by turbulent kinethic energy (TKE) that I don't understand very well:


Opel Astra:

The Eco-Roadster text tells that this plot helped the engineers to see where and how to make aerodynamic improvements to the shape of the car; the fact is that I'm not able to explain to myself how the iso-surface of ptot=0 coloured by the TKE could help me to realize where and how to make aero improvements. Why ptot=0 and not static pressure=0 or any other? And what has to do here the TKE coloured on the iso-surface of ptot=0? Perhaps the question is how interact TKE in the total pressure to make an increase of drag?

As you can see in the Opel Astra image, it is showed again that this particular plot seems to be helpful to engineers to make areo improvements in the final styling shape of their cars. Anybody could enlighten me with this a bit?

Thanks a lot!

Regards, Freeman

  Reply With Quote


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
Saving ppm images in "adaptive time stepping" Erdem FLUENT 5 May 7, 2009 06:08
Software to build avi from a sequence of images hsieh OpenFOAM Post-Processing 2 January 18, 2008 23:12
A question about .eps images using CFX5.6 post Forrest CFX 6 June 18, 2004 03:24
ImageMagic & IBM's AIX51: limited no. of images Volker Pawlik FLUENT 0 March 10, 2003 06:08
Exporting Images J. Weiler FLUENT 1 March 28, 2001 04:23

All times are GMT -4. The time now is 09:03.