Nucleation and Bubble Dynamics In Vortical Flows

[+] Author and Article Information
Roger E. A. Arndt

St. Anthony Falls Laboratory, University of Minnesota, Mississippi River at 3rd Avenue S.E., Minneapolis, MN 55414

Brant H. Maines

Lockheed-Martin Aeronautics Company, Fort Worth, TX 76101

J. Fluids Eng 122(3), 488-493 (May 15, 2000) (6 pages) doi:10.1115/1.1286994 History: Received March 23, 1999; Revised May 15, 2000
Copyright © 2000 by ASME
Topics: Bubbles , Cavitation
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Typical nucleus trajectory. (Uncertainty in position ±1 percent)
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Effect of capture location on elongation rates. (Uncertainty Estimates: x/c0<±1 percent, for L=5 mm±4 percent)
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Bubble growth data obtained in different facilities with different water quality and different observational techniques. HSV=High Speed Video, CSP=Conditionally Sampled Photos. (Uncertainty Estimates: U=6 m/s±0.75 percent, CSP: L=10 mm±0.5 percent, HSV Strong: L=10 mm±3.5 percent, Weak: L=10 mm±2 percent)
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Correlation of bubble growth rate with theoretical tension in the vortex. (Uncertainty Estimates in L̇/U are driven by the uncertainty in the measurement of bubble radius. CSP L̇/U Uncertainty <10 percent, HSV L̇/U Uncertainty ∼30 percent)
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Capture of a large nucleus
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Typical observed bubble growth, σ=4.7
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Cylindrical bubble growth with different values of Cl (NACA 662-415,U=6 m/s; Uncertainty: x/c0±1 percent,Cl±1.5 percent)
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Typical bubble growth data obtained in strong water with the high speed video. (Uncertainty Estimates: x/c0<±1 percent, for L=10 mm±3.5 percent, for L̇=40 m/s±2.5 percent)
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Typical bubble growth data obtained in weak water with the high speed video. (Uncertainty Estimates: x/c0<±1 percent, for L=5 mm±4 percent, for L̇=20m/s±2.0 percent)




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