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Drag and lift coefficient

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Old   January 14, 2019, 10:25
Default Drag and lift coefficient
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Prasenjit Sanyal
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Cd=Fd/(0.5*p*A*v^2)
Cl=Fl/(0.5*p*A*v^2)

Now the question is that are both this A is same i.e. the projected area of the body along the fluid flow direction? Or We have to use Ad and Al i.e. Projected area along the direction of flow and projected area along perpendicular to flow??
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