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

Cd Cl coefficient

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 3, 2009, 22:39
Default Cd Cl coefficient
  #1
New Member
 
Jane
Join Date: Mar 2009
Posts: 18
Rep Power: 8
Jane is on a distinguished road
Hai, wanna ask actually how to get Cd and Cl coefficient? Is it using reference value compute from inlet? or is it have another way? is it right using cd and cl value when iteration converge?Coz if use reference value method, my Cl and Cd extremely small.
Thx
Jane is offline   Reply With Quote

Old   June 4, 2009, 02:32
Default
  #2
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,990
Rep Power: 30
-mAx- will become famous soon enough
Coefficients are computed with Reference Values, which you have to set up in Report/Reference Values.
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Old   June 4, 2009, 03:35
Default
  #3
New Member
 
Jane
Join Date: Mar 2009
Posts: 18
Rep Power: 8
Jane is on a distinguished road
Quote:
Originally Posted by -mAx- View Post
Coefficients are computed with Reference Values, which you have to set up in Report/Reference Values.
In reference values, what i should put for area? For my case is to simulate flow passing an airplane, then in order to calculate Cd and Cl, what area I should put in?
How about the length?
Thx
Jane is offline   Reply With Quote

Old   June 4, 2009, 05:37
Default
  #4
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,990
Rep Power: 30
-mAx- will become famous soon enough
They are typicall values from the body you are computing the force.
The values won't affect the force results.
check the definition of Cd and Cl
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- 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
Heat transfer coefficient - what is waht Stan FLUENT 20 March 11, 2014 11:42
Simulation of a single bubble with a VOF-method Suzzn CFX 18 October 2, 2009 04:18
Automotive test case vinz OpenFOAM Running, Solving & CFD 98 October 27, 2008 09:43
Two-Phase Buoyant Flow Issue Miguel Baritto CFX 4 August 31, 2006 12:02
Species diffusion coefficient iceabc FLUENT 1 June 10, 2004 10:04


All times are GMT -4. The time now is 21:11.