|
[Sponsors] |
November 19, 2018, 06:57 |
Lift Coefficient in fluent (reference value)
|
#1 |
New Member
Yuk Tong Cheng
Join Date: Oct 2018
Location: Hong Kong
Posts: 2
Rep Power: 0 |
For the fluent solver, it uses the force to deduce the coefficient, but what should be the Area i should set in reference value?
I am doing a car model, I get the downforce but the lift coefficient seems to be incorrect since i don't know the area (should I use surface area or cross sectional area?). is there any way to compute the coefficient directly? Thank you! |
|
November 19, 2018, 08:57 |
|
#2 |
Senior Member
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,760
Rep Power: 66 |
The reference area is defined in the definition of lift coefficient. Depending on who you are, what day of the week it is, and what time of day it is, the reference area chosen can be anything. If you don't know what the reference area ought to be, then there's no meaning to lift coefficient and you should probably shouldn't be looking at the lift coefficient in the first place. Why isn't the lift force sufficient? Is there a need to examine the lift coefficient?
However, the reference area is often the frontal cross-sectional area (which has nothing to do with lift but this makes the lift and drag coefficients consistent). A better area is the planform area (again a projected area but viewed from above). Both are used. Normally it is a cross-sectional area and not an actual surface area. |
|
Tags |
fluent, lift coefficient |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Running UDF with Supercomputer | roi247 | FLUENT | 4 | October 15, 2015 14:41 |
drag and lift coefficient fluent | bia | FLUENT | 10 | October 22, 2014 04:40 |
Constant velocity of the material | Sas | CFX | 15 | July 13, 2010 09:56 |
G95 + CGNS | Bruno | Main CFD Forum | 1 | January 30, 2007 01:34 |
Building OpenFoAm on SGI Altix 64bits | anne | OpenFOAM Installation | 8 | June 15, 2006 10:27 |