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The Effect of Experimental Facility Dynamics on a Cavitation Instability

Duttweiler, Mark E. and Schell, Steven E. and Brennen, Christopher E. (2000) The Effect of Experimental Facility Dynamics on a Cavitation Instability. In: ASME 2000 Fluids Engineering Division Summer Meeting, 11-15 June 2000, Boston, Massachusetts, USA.

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This paper presents the results of an investigation assessing the role experimental facility dynamics might play in determining the nature of a recently observed instability on a cavitating propeller (Duttweiler and Brennen 1999). To address this question, a theoretical model of the facility dynamics is developed. Experiments were conducted to measure the response of the water tunnel facility to volumetric excitations of varying amplitude and frequency, and the measurements are compared with the response predicted by the model. The dynamics of the propeller cavitation are characterized by estimating two parameters (cavitation compliance and mass flow gain factor) previously employed in developing a system transfer function for cavitating pumps (Brennen 1994). Finally, the characteristics of a model for the complete system, incorporating both the cavitating propeller and the experimental facility dynamics, are discussed.

Item Type:Conference or Workshop Item (Paper)
Additional Information:FEDSM2000-11015 The authors would like to acknowledge the support of the Office of Naval Research and technical monitor Dr. Edwin Rood for their generous support of this research. The research program was funded under Contract N00014-97-1-0002. Finally, Dr. Teiichi Tanaka provided much assistance in conducting the tunnel response experiments.
Record Number:CaltechAUTHORS:DUTasmefedsm00
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97
Deposited By: Christopher Brennen
Deposited On:05 Oct 2004
Last Modified:02 Oct 2019 22:16

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