[chandra shekhar pant]

Dear experts,

I am simulating a 2D/3D airfoil at an angle of attack of 7 degree, and trying to find the coefficient of lift and drag by writing a function in controlDic, although there are no errors but the results looks very off from the measured data, could anyone please help me with these confusions:
1. For an angle of attack 7 degree, what would be the values of

 liftDir

and

dragDir

?
For zero angle of attack I guess these will be

 liftDir (0 1 0 )

and

dragDir (1 0 0)

2. What would be the

Aref

if I have an airfoil of chord length 1 meter and extruded 1 m in the spanwise length, I assume the

Aref 1 ?

. Will this be same if I am performing 2D or 3D simulations ?


3. Is there any way to obtain these coefficients after the simulations as postProcessing ?


For getting the 7 angle of attack I am rotating the airfoil. Any suggestion/comment will be a great help, thanks in advance.