Wrong calculation of force and moments in Tecplot
 

Hello,

I performed a CFD analysis over a bluff body. When I calculate the drag force on the body in Tecplot (Perform Integration --> Forces and Moments), I get a very high value.

I can simple estimate the amount of drag force:
- D = C_d 1/2 rho V^2 A
rho=1.225 , A=0.0378 m^2 , V= 40 m/s
D= 37C_d

The value for the drag force I get from Tecplot is:
Drag: -2.265107e+004

which is too much.


Has anybody ever got such a problem from tecplot?


Cheers,
Cyln

Ensure you've set viscosity in the Fluid Properties dialog to a value consistent with your data's units, and that you've identified solution variables correctly in the Field Variables dialog.

Yeap, one should set the correct viscosity first