Fluid Mechanics: Fundamentals and Applications
4th Edition
ISBN: 9781259696534
Author: Yunus A. Cengel Dr., John M. Cimbala
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 10, Problem 86EP
Air flows through the test section of a small wind tunnel at speed
And the length of the wind tunnel test section is 1.5ft. Assume that the boundary layer thickness is neggligibe prior to the start section. Is the boundary layer along the test section wall laminar or turbulent or transitional?
Answer: laminar
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Students have asked these similar questions
Air (p= 1.2 kg/m³, kinematic viscosity v =1.8 + 10-5 m²/s )flows along
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We are testing a flat plate of length L = 1.125 m and width W = 0.225 m in a stream of air flowing with a velocity of 20 m/s. In test case 1, the air is flowing parallel to L and in test case 2 air is flowing parallel to W. Find:
What portion of the boundary layer flow is laminar in each case?
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Assuming the flow is entirely turbulent over the plate, calculate the drag force in both test cases
Take air density as 1.2 kg/m3 and its viscosity as μ=18×10−6μ=18×10−6 N.s/m2.
Q4) Define the boundary layer, then find the thickness of boundary layer, shear stress, drag force and
coefficiet of drag in terms of Re for the velocity profile of laminar boundary layer u/U=4(y/8)-6(y/8)5.
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Chapter 10 Solutions
Fluid Mechanics: Fundamentals and Applications
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Ch. 10 - Prob. 50CPCh. 10 - Consider the flow field produced by a hair dayer...Ch. 10 - In an irrotational region of flow, the velocity...Ch. 10 -
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Ch. 10 - Prob. 63PCh. 10 - Prob. 64PCh. 10 - Prob. 65PCh. 10 - In an irrotational region of flow, we wtite the...Ch. 10 - Prob. 67PCh. 10 - Prob. 68PCh. 10 - Water at atmospheric pressure and temperature...Ch. 10 - The stream function for steady, incompressible,...Ch. 10 -
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