Cavitation in an Extremely Limited Flow Through Very Small Orifices

[+] Author and Article Information
R. Oba, T. Ikohagi, K. T. Kim

Institute of High Speed Mechanics, Tohoku University, Sendai, Japan

J. Fluids Eng 104(1), 94-98 (Mar 01, 1982) (5 pages) doi:10.1115/1.3240864 History: Received February 11, 1980; Online October 26, 2009


In order to clarify the role of cavitation nuclei upon inception, the behavior of inception was carefully investigated in an extremely limited water flow through very small orifices less than 1.0 mm in diameter under a prescribed nuclei condition. The following facts of technical interest were determined: a) The desinent cavitation number (σd ) decreased rapidly and exponentially with the orifice diameter d, up to one hundredth in magnitude; and b) the cavitation appearance in such limited flows was quite different from that in fully turbulent flows through larger orifices.

Copyright © 1982 by ASME
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