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6. Boundary layer thickness. /10 points/ We have air flowing over a smooth flat plate. The air is at T-300 Cand p 1.01 atm. The flowrate is 8.5 m/s over the plate, giving laminar flow. What is the thickness of the boundary layer 0.30 m from the leading edge of the plate? a) 1.36 m b) 51.8 mm c) 0.071 mm d) 3.72 mm e) 28.6 cm

Explanation / Answer

thickness of boundary layer = (0.30 * 300 * 1.013 * 105 * 8.5)/(2.083 * 1010)

                                           = 3.72 * 10-3 m

                                          =    3.72 mm

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