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Assignment 13 - CHEE 3363-Fluid Mechanics Assignment 13 Pro...

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Unformatted text preview: CHEE 3363---Fluid Mechanics Assignment 13 Pro 9.3 The takeoff speed of a Boeing 757 is 260 ℎ? . At approximately what distance will the boundary layer on the wings become turbulent? If it cruises at 850 ℎ? at 10,000 m, at approximately what distance will the boundary layer on the wings now become turbulent? Pro 9.11 An approximation for the velocity profile in a laminar boundary layer is = 3 2 − 1 2 ¡ ¢ 3 Does this expression satisfy boundary conditions applicable to the laminar boundary-layer velocity profile? Evaluate ∗ and . Pro 9.68 Air flows in a cylindrical duct of diameter = 150 . At section 1, the turbulent boundary layer is of thickness 1 = 10 , and the velocity in the inviscid central core is 1 = 25 ? . Further downstream, at section 2, the boundary layer is of thickness 2 = 30 . The velocity profile in the boundary layer is approximated well by the 1/7-power expression. Find the profile in the boundary layer is approximated well by the 1/7-power expression....
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Assignment 13 - CHEE 3363-Fluid Mechanics Assignment 13 Pro...

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