CFD Online Logo CFD Online URL
Home > Forums > STAR-CCM+

Lift distribution

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

LinkBack Thread Tools Display Modes
Old   October 24, 2010, 04:26
Default Lift distribution
New Member
Join Date: Sep 2010
Posts: 10
Rep Power: 7
PB4 is on a distinguished road
Hi there,

I am fairly new to CFD so please be nice
I am looking to plot lift distribution over my wing, to help me predict initial spanwise stall point so I can adjust wing parameters (mainly twist and tip airfoil characteristics, the rest is fixed), the reason I want to use CFD as opposed to other well documented methods is that my wing is quite "dirty", I have 3 engine nacelles on the leading edge and a retractable float which fits under the wing at about 60% span though not flush with the surface, all that I'm sure will affect the results.
my questions are :
- How do I plot lift distribution along span ? I've played around with overall wing lift coef and section pressure coefs but would like to see some kind of spanwise lift curve, local Cl etc
- What would typically be mesh requirements for "good enough" spanwise lift distribution results ? I'm not looking into accurate drag or even lift values, just the distribution of it.

thanks all for your help !
PB4 is offline   Reply With Quote

Old   October 28, 2010, 06:59
New Member
Thomas Larsen
Join Date: Apr 2010
Posts: 12
Rep Power: 8
Larsen is on a distinguished road
Split the surface up in a upper and lower wing. Make an X-Y plot and plot Span - Pressure. Later you should export the file and do a regression analysis in your preffered data manager (Igor or etc..).

There is no good answer to what is fine enough mesh, but you should check that the Wall y+ values are within the correct value for the turbulence modle you are using. An general answer is that the more complex geometry requires finer mesh.
Larsen is offline   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
Spanwise Lift Distribution Riaan FLUENT 9 January 13, 2013 15:03
Thin foil analsis (sail) - Lift Coeff Problem Kelvin CFX 3 December 22, 2008 17:22
Spanwise lift distribution on 3D wing Bridou FLUENT 1 August 26, 2007 20:39
spanwise lift distribution plot Vincent FLUENT 2 May 5, 2006 00:55
Lift distribution along wing nico FLUENT 2 February 2, 2004 13:21

All times are GMT -4. The time now is 07:41.