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RESEARCH PAPERS

The Effect of Nuclei on the Inception of Bubble and Sheet Cavitation on Axisymmetric Bodies

[+] Author and Article Information
Y. Kodama

Ship Research Institute, Tokyo, Japan

N. Take, H. Kato

University of Tokyo, Tokyo, Japan

S. Tamiya

University of Tsukuba, Ibaragi, Japan

J. Fluids Eng 103(4), 557-563 (Dec 01, 1981) (7 pages) doi:10.1115/1.3241767 History: Received February 11, 1980; Online October 26, 2009

Abstract

Hydrogen bubbles were generated as cavitation nuclei and their distributions were measured. The number and size distribution of bubble cavities generated on axisymmetric bodies was calculated and compared with experimental results. The measured size distribution of bubble cavities agreed qualitatively with the calculated value, but the total number of cavities was about one half of the calculation. The role of stream nuclei on the inception of sheet cavity was investigated experimentally. Without added nuclei, the value of the incipient cavitation number σi showed a large scattering, whereas with added nuclei the scattering became fairly small and σi converged to the upper limit of that when no nuclei were added. σi with added nuclei also coincided with the desinent cavitation number σd , and σd remained unchanged by adding nuclei.

Copyright © 1981 by ASME
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