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Scaling Experiments on the Dynamics and Acoustics of Travelling Bubble Cavitation

Kuhn de Chizelle, Y. and Brennen, C. E. and Ceccio, S. L. and Gowing, S. (1992) Scaling Experiments on the Dynamics and Acoustics of Travelling Bubble Cavitation. Proceedings of the Institution of Mechanical Engineers. Part C, Journal of Mechanical Engineering Science, C453 (047). pp. 165-170. ISSN 0954-4062. http://resolver.caltech.edu/CaltechAUTHORS:KUHimechec92b

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Abstract

Ceccio and Brennen (1991 and 1989) recently examined the interaction between individual cavitation bubbles and the structure of the boundary layer and flow field in which the bubble is growing and collapsing. They were able to show that individual bubbles are often fissioned by the fluid shear and that this process can significantly effect the acoustic signal produced by the collapse. More recently Kumar and Brennen (1991-1992) have closely examined further statistical properties of the acoustical signals from individual cavitation bubbles on two different headforms in order to learn more about the bubble/flow interactions. All of these experiments were, however, conducted in the same facility with the same size of headform (5.08cm in diameter) and over a fairly narrow range of flow velocities (around 9m/s). Clearly this raises the issue of how the phenomena identified change with speed, scale and facility. The present paper describes experiments conducted in order to try to answer some of these important questions regarding the scaling of the cavitation phenomena. The experiments were conducted in the Large Cavitation Channel of the David Taylor Research Center in Memphis Tennessee, on similar Schiebe headforms which are 5.08, 25.4 and 50.8cm in diameter for speeds ranging up to 15m/s and for a range of cavitation numbers.


Item Type:Article
Additional Information:Large scale experiments like these require help of many people and the authors are very grateful to all of those who helped in this enterprise. We are very grateful to the ONR for their support under contracts N00014-91-J-1426 (SLC) and N00014-91-J-1295 (CEB, YKdC). We are also extremely grateful to the David Taylor Research Center (DTRC) and to their staff including W.B. Morgan for making the use of the LCC possible for us. From DTRC both Young Shen and James Blanton were important and valued members of the team who conducted the experiments. Po-Wen Yu (U. of Michigan) and Douglas Hart (Caltech) provided important help with the experiments. The staff at the LCC in Memphis, Tenn. were remarkably tolerant and invariably helpful and we wish to thank all of them most sincerely; we are particularly grateful to Bob Etter whose constant support was invaluable.
Record Number:CaltechAUTHORS:KUHimechec92b
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:KUHimechec92b
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:110
Collection:CaltechAUTHORS
Deposited By: Christopher Brennen
Deposited On:30 Dec 2004
Last Modified:26 Dec 2012 08:39

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