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-   -   Compute Cl and Cd in fluent ? (http://www.cfd-online.com/Forums/fluent/106280-compute-cl-cd-fluent.html)

MHP August 23, 2012 13:37

Compute Cl and Cd in fluent ?
 
Dear friends,
Is there anyone knows how should I compute drag and lift coefficient in fluent?

mali28 August 24, 2012 05:34

Quote:

Originally Posted by MHP (Post 378398)
Dear friends,
Is there anyone knows how should I compute drag and lift coefficient in fluent?

See the detail below:

http://cape-forum.com/index.php/topic,1299.0.html

husker August 24, 2012 07:15

Hi,

You should use report menu. Report > Forces

Drag force direction is the same as your free stream velocity direction.
Lift force is as you know, perpendicular to that direction.
You can modify your unit vectors with cos and sin functions to calculate lift and drag directions. It is easy, you can find the details in an aerodynamics book.

Also, you should set your reference values such as density, area and velocity properly.

Regards


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