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The Micro-Bubble Distribution in the Wake of a Cavitating Circular Cylinder

Sato, K. and Liu, Zhenhuan and Brennen, C. E. (1993) The Micro-Bubble Distribution in the Wake of a Cavitating Circular Cylinder. In: ASME Cavitation and Multiphase Flow Forum, 1993. Fluids Engineering Division. Vol.FED-153. No.153. American Society of Mechanical Engineers , New York, pp. 75-80.

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Bubble nuclei populations in the wake of a circular cylinder under cavitating and noncavitating conditions were measured using a Phase Doppler Anemometry (PDA) system. In addition, the mean velocity defect and the turbulent fluctuations were monitored in order to try to understand the nuclei population dynamics within the flow. At the Reynolds numbers of these experiments (20000->33000) the laminar near-wake is fairly steady and under very limited cavitation conditions nuclei accumulate in this wake so that the population there is several orders of magnitude larger than in the upstream flow. Further downstream the population declines again as nuclei are entrained into the wake. However at fifteen diameters downstream the population is still much larger than in the upstream flow.

Item Type:Book Section
Additional Information:The authors wish to thank Professor Allan Acosta for helpful advice. This work was carried out with the support of the Office of Naval Research under Grant N00014-91-5-1295.
Funding AgencyGrant Number
Office of Naval Research (ONR)N00014-91-5-1295
Series Name:Fluids Engineering Division
Issue or Number:153
Record Number:CaltechAUTHORS:SATcmff93
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:146
Deposited By: Christopher Brennen
Deposited On:29 Oct 2004
Last Modified:02 Oct 2019 22:29

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