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How to determine the Drag Coefficient using POST?

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Old   January 18, 2006, 20:53
Default How to determine the Drag Coefficient using POST?
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Hi Im new to CFD, currently trying to carry out a wind tunnel analysis on flow around a vehicle, I have went through the solver, but running into problem determining the Drag Coefficient for the vehicle.

The velocity is aligned to the x-axis, so In CFX-Post is it appropriate to plot "Force X" on the Vehicle body and use the Max value and apply it to find the Drag Coefficient as follow:

Cd = force_x()@vehicle_Surface / (0.5*Rho*U^2*A)

Is this the correct method? please advice?

many thanks
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