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Recent Investigations of the Mechanics of Cavitation and Cavitation Damage

Knapp, Robert T. (1955) Recent Investigations of the Mechanics of Cavitation and Cavitation Damage. Transactions of the ASME, 77 . pp. 1045-1054. https://resolver.caltech.edu/CaltechAUTHORS:20140903-153101048

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Abstract

This paper describes water-tunnel investigations into the mechanics of "fixed"-type cavitation and into the probable mechanism through which this type causes material damage. High-speed motion pictures were used to study the cavity mechanics, and indications of the damage pattern were obtained by measuring the pitting rate on soft aluminum test specimens. Information was obtained on the frequency and intensity of the damaging blows, the distribution of damage in relation to the area covered by the cavitation, and the variation of the intensity of cavitation with velocity.


Item Type:Article
Additional Information:© 1955 ASME. Contributed by the Hydraulic Division and presented at the Annual Meeting, New York, N. Y., November 28-December 3, 1954, of The American Society of Mechanical Engineers. Manuscript received at ASME Headquarters August 17, 1954. Paper No. 54--A-106. The primary support for the work described herein was received from Contract Nonr-220(08), which contains funds from the Office of Naval Research and the Bureau of Ships of the U. S. Navy. Selection of aluminum as the material for the damage test sections was suggested by Mr. W. S. Rheingans, who has shown continuing interest in all aspects of the author's cavitation research program. The principle used in estimating the stream thickness of the re-entrant flow on the basis of the momentum required to balance the deficiency in negative pressure caused by the presence of the cavity was suggested by Mr. Joseph Levy of the Hydrodynamics Laboratory staff. The author also gratefully acknowledges the help received from his assitants, Frank Bonamassa, James Isaacson, and Salyer Reed.
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Funding AgencyGrant Number
Office of Naval Research and Bureau of ShipsNonr-220(08)
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Other Numbering System NameOther Numbering System ID
Hydrodynamics Laboratory158
Record Number:CaltechAUTHORS:20140903-153101048
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140903-153101048
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49213
Collection:CaltechAUTHORS
Deposited By: Kristin Buxton
Deposited On:03 Sep 2014 22:55
Last Modified:03 Oct 2019 07:11

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