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An examination of a criterion for turbulent boundary layer separation
Dinwiddie, III, Ballard A.
Dinwiddie, III, Ballard A.
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t1963_Dinwiddie III.pdf
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1963-06
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Abstract
Turbulent boundary layer separation tests were conducted in the University of Wichita 6 x 14-inch boundary layer wind tunnel at a Reynolds number of 2.6 million, based on a length of flat plate in turbulent flow 1n a zero pressure gradient. Data obtained from the tests, which included skin friction coefficient, velocity profile, and adverse pressure gradient measurements, as well as the location of the point of separation, were used to examine a criterion for turbulent boundary layer separation by A. A. Townsend.
The actual location of the point of separation was compared with that predicted by the criterion. Skin friction was measured by the J . H. Preston surface p1tot tube method and agreement was obtained with the measured boundary layer thickness. To a degree the criterion was substantiated; however, it was concluded that additional tests would be required in order to completely verify the criterion for Reynolds numbers of the order of 2. 6 million.
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List of symbols -- Summary -- Introduction -- Theory -- Experiment -- General description of test -- Test equiptment -- Test proceture -- Discussion -- Data reduction -- Conclusions -- References -- Figures
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Thesis (M.S.)-- University of Wichita, College of Engineering, Dept. of Aeronautical Engineering
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Wichita State University
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Wichita State University