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Question

Velocity profiles are measured at the upstream end (surface 1) and at the downstream end (surface 2) of a rectangular control volume, as shown in Fig.8. If the flow is incompressible, two dimensional, and steady, what is the drag coefficient for the airfoil? The vertical dimension H is 0.025c. The pressure is p∞ (a constant) over the entire surface of the control volume. (This problem is an extension of Problem 2.12.)

14. Velocity profiles are measured at the upstream end (surface 1) and
at the downstream end (surface 2) of a rectangular control volume, as
shown in Fig.8. If the flow is incompressible, two dimensional, and
steady, what is the drag coefficient for the airfoil? The vertical
dimension H is 0.025c. The pressure is poo (a constant) over the entire
surface of the control volume. (This problem is an extension of
Problem 2.12.)
H = 0.025ci
1 = U. 1-0.5 COSM
A
Fig. 8.

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