Question: An engineer is designing a subsonic wind tunnel. The test section is to have a cross-sectional area of 4 m 2 and an airspeed of

An engineer is designing a subsonic wind tunnel. The test section is to have a cross-sectional area of 4 m² and an airspeed of 60 m/s. Th e air density is 1.2 kg/m³. The area of the tunnel exit is 10 m². The head loss through the tunnel is given by h_L = (0.025)(V²_T /2g), where V_T is the airspeed in the test section. Calculate the power needed to operate the wind tunnel. Assume negligible energy loss for the flow approaching the tunnel in region A, and assume atmospheric pressure at the outlet section of the tunnel. Assume α = 1.0 at all locations. Vr- Test section

Vr- Test section

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