(Solved): In wind tunnels the test section is perforated to suck out fluid and provide a thin viscous boundar ...

In wind tunnels the test section is perforated to suck out fluid and provide a thin viscous boundary layer. The test section wall contains 1200 holes of 5-mm diameter each per square meter of wall area. In the figure, Df = 5.4 m. Dg = 1.6 m. Do = 4.1 m. The suction velocity through each hole is Vs = 8 m/s, and the test-section entrance velocity is V? = 35 m/s. Assume incompressible steady flow of air at 20°C. Test section D? Uniform suction Dr Do 4 L=4m V?- - V? Vo Determine the value of Vo Vo =________+] m/s. 1958 Calculate the value for V2. m/s. Calculate the value of Vf. 1 Em/s