Ansys Learning Forum Forums Discuss Simulation Fluids Validation of airfoil Lift and Drag coefficients Reply To: Validation of airfoil Lift and Drag coefficients

Aras karimi
Subscriber

According to the figure below,

in the reference value section, I set the compute frome to the inlet, the Area to the product of the chord length multiplied by the span length, the length to the chord length, and the velocity to the inlet flow speed:

 

Also, in order not to worry about the reference value settings, I once calculated the lift and drag force without setting the reference value part, and the exact same huge error is seen for the lift force:

 

I am very worried and I really don't know what to do. The mesh quality is also very good.

Where do you think the problem could be?