CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   FLUENT (http://www.cfd-online.com/Forums/fluent/)
-   -   NACA 4412 airfoil for Cd (http://www.cfd-online.com/Forums/fluent/94935-naca-4412-airfoil-cd.html)

John222 November 30, 2011 11:00

NACA 4412 airfoil for Cd
 
The drag coefficient is negative at high angle of attacks!!

however at 0 angle of attack it seems to be OK.

the lift coefficient is acceptable and good at all AOA.

What is the problem.

I would say its my inputs when in the boundary conditions for pressure farfield;

i have it as X component= cos (10) and Y component = sin (10)

please help me


All times are GMT -4. The time now is 19:40.