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Entrance and Cavitation Bubbles

Knapp, Robert T. (1944) Entrance and Cavitation Bubbles. California Institute of Technology , Pasadena, CA. (Unpublished)

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The purpose of this memorandum is to present a general discussion of the physical nature of two phenomena : (a) cavitation on underwater projectiles, and (b) the enveloping bubble formed when a projectile enters the water at moderate or high velocities. In this discussion an effort is made to demonstrate a close relationship between the two phenomena. In attempting to explain their various aspects, several hypotheses are advanced concerning the physical mechanisms involved. Although these hypotheses are founded on laboratory measurements and observations, the experimental work is far from complete. Therefore, the explanations and conclusions contained herein are very tentative, and must undoubtedly be revised extensively as the fund of experimental and analytical knowledge increases. However, it was felt that a discussion of these subjects at this time, even though it represents only a transient viewpoint, would be of value if it could serve as a stimulus for discussion and a basis for interchange of experimental information and working hypotheses.

Item Type:Report or Paper (Technical Report)
Additional Information:Office of Scientific Research & Development National Defense Research Committee Division Six-Section 6.1. Section No. 6.1-Sr207 1900. HML No. ND-31.
Group:Hydrodynamics Laboratory
Record Number:CaltechAUTHORS:20150630-124238452
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:58711
Deposited On:22 Jul 2015 19:30
Last Modified:03 Oct 2019 08:39

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