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.)

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