Air fl ows through a 6-cm-diameter smooth pipe that has a 2-m-long perforated section
Chapter 6, Problem p6.147(choose chapter or problem)
Air fl ows through a 6-cm-diameter smooth pipe that has a 2-m-long perforated section containing 500 holes (diameter 1 mm), as in Fig. P6.147. Pressure outside the pipe is sea-level standard air. If p1 5 105 kPa and Q1 5 110 m3 /h, estimate p2 and Q2, assuming that the holes are approximated by thin-plate orifi ces. (Hint: A momentum control volume may be very useful.) D = 6 cm 2 m 500 holes (diameter 1 mm)
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