Learning Forum

[user deleted]

Hi!

I conduct flow simulation of the aircraft. And I try to get lift and drag forces and also aerodynamic coefficients from Ansys Fluent. But after solution I got absolutely wrong results (I compared data with experimental one). I used reference values for simulation, but it didn't help.  

What theory is used in Fluent for aerodynamic forces calculation? In theory guide I found some information only for Discrete Phases.

Regards,

Katiya

[DrAmine]

Check chapter Computing Forces, Moments, and the Center of Pressure in the theory guide. Check this tutorial for forces

https://youtu.be/Hq986_nn4oU

[user deleted]

Amine, thank you! Could you please explain me how lift and drag coefficients in Fluent depend on reference values. I know it directly depends on reference area. What other reference values I should put to get correct aerodynamic coefficients?

Best regards,

Katya

[Rob]

It's covered in DOC: click on help under reference values and look in the Field Function Variables section of the User's Guide (probably 42.2) 

[user deleted]

Thank you!

[Seerat]

How to calculate coefficient of lift and drag from lift force and drag forcen

[YasserSelima]

Did you read this comment?nn