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

Symmetry plane effect on drag coefficient

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

Reply
 
LinkBack Thread Tools Display Modes
Old   July 3, 2009, 06:29
Exclamation Symmetry plane effect on drag coefficient
  #1
Member
 
kdrbrk's Avatar
 
Burak
Join Date: May 2009
Posts: 90
Rep Power: 8
kdrbrk is on a distinguished road
Hi everyone,
I am trying to analyze a car. Of course half of the car, which is divided longitudinally

Lets say reported drag force is 100N. Here is the question...

This force is for:
a. half of the car (total drag force is 100x2=200 N)
b. entire car (total drag force is 100N)

I really need an urgent exact answer for this question. If the answer is "a." then I am in trouble, if the answer is "b." i will be very happy

thanks in advance
kdrbrk is offline   Reply With Quote

Old   July 3, 2009, 06:57
Default
  #2
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,961
Rep Power: 30
-mAx- will become famous soon enough
a --> the computed force is the one for the half of your car
But don't forget to apply the symmetry BC, and check if you are well defined your Inlet BC according to the symmetry. (if you work with flow rate (or velocity), take care to set up the half of the attempted value)
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Old   April 17, 2010, 09:19
Default
  #3
Member
 
kdrbrk's Avatar
 
Burak
Join Date: May 2009
Posts: 90
Rep Power: 8
kdrbrk is on a distinguished road
thank you max !
kdrbrk 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
Drag Coefficient Convergence Problem John FLUENT 16 September 4, 2009 02:44
Drag coefficient for parcels in dieselFoam sebastian_vogl OpenFOAM Running, Solving & CFD 5 December 31, 2008 13:19
Automotive test case vinz OpenFOAM Running, Solving & CFD 98 October 27, 2008 09:43
Symmetry plane error in solver Santiago Orrego. CFX 6 January 31, 2007 08:09
ICEM and symmetry plane Roland CFX 3 September 13, 2006 08:38


All times are GMT -4. The time now is 19:59.