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Forum: OpenFOAM Running, Solving & CFD

April 26, 2012, 05:21

Replies: 12

Finding Lift/Drag/Moment Coefficients on 3D model aircraft

Views: 5,301

Posted By Rider

I think we say the same thing. We have two...

I think we say the same thing.

We have two cases :
If you change the components of the velocity (and don't rotate the geometry), the lift and drag direction must change.
If you rotate the...

Forum: OpenFOAM Running, Solving & CFD

April 26, 2012, 02:54

Replies: 12

Finding Lift/Drag/Moment Coefficients on 3D model aircraft

Views: 5,301

Posted By Rider

Like lovecraft22 has said, "You can use whatever...

Like lovecraft22 has said, "You can use whatever you want".

Drag force => D=0.5*rho*Sref*V^2*Cd.

So,
If you have Cd=0.2 with Sref=2 (m^2) or if you have Cd=0.4 with Sref=1 (m^2), then you...

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