Momentum Thickness Measurements for Thick Axisymmetric Turbulent Boundary Layers

[+] Author and Article Information
Kimberly M. Cipolla, William L. Keith

Naval Undersea Warfare Center, Code 2141, 1176 Howell Street, Newport, RI 02841-1708

J. Fluids Eng 125(3), 569-575 (Jun 09, 2003) (7 pages) doi:10.1115/1.1568359 History: Received April 18, 2002; Revised December 03, 2002; Online June 09, 2003
Copyright © 2003 by ASME
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Schematic of experimental setup using the high-speed seawater tow tank (HSSTT)
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Total drag versus time measured during a typical run
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Measured tangential drag coefficient versus tow speed for 0.8-mm-diameter cylinders compared to predicted flat-plate values
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Cd(L/a) versus Rea(a/L) analytical results from Ackroyd 4
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Sketch of control volume for cylindrical coordinates
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Momentum thickness θ at the end of the cylinder as a function of tow speed
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Ratio of momentum thickness to length, θ(L)/L versus nondimensional velocity UoL/ν
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Dimensional scaling of momentum thickness versus nondimensional velocity UoL/ν
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Nondimensional momentum thickness, scaled for 2.8×104<L/a<3.5×105
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Nondimensional momentum thickness, scaled for 1.2×103<L/a<1.1×104



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