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Some compressibility effects in cavitation bubble dynamics

Citation

Schneider, Arthur John Rudolph (1949) Some compressibility effects in cavitation bubble dynamics. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechTHESIS:12072010-114721933

Abstract

1. Theories on the dynamics of cavitation are critically examined, and are found to need clarification. 2. The contents of a bubble formed from a submicroscopic nucleus are agreed to be almost entirely water vapor. This water vapor is shown to be unable to offer decisive resistance to inward flow during the finite portion of the collapse. 3. The effect of compressibility of the liquid is analyzed in detail. It is found to reduce velocities noticeably, but does not, in itself, eliminate the anomaly of an infinite collapse velocity as the bubble radius approaches zero. The pressures in the fluid surrounding the bubble are found to be markedly reduced by the assumption of compressibility. 4. Energy is found to be continually transported inward during the collapse period. 5. The mechanism of rebound of a compressible liquid is examined when the bubble collapse is arrested by an immovable barrier of finite radius. A shock wave is formed followed by a tension wave responsible for rupturing the liquid. 6. The shock wave is estimated to carry off 47% of available energy, and limit rebound to 81% of former size. 7. The maximum pressure in the outgoing shock wave is found to be incapable of damaging a metallic wall when the point of collapse is not on that boundary.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Mechanical Engineering
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Mechanical Engineering
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Hollander, A.
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1949
Record Number:CaltechTHESIS:12072010-114721933
Persistent URL:http://resolver.caltech.edu/CaltechTHESIS:12072010-114721933
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6195
Collection:CaltechTHESIS
Deposited By: Rita Suarez
Deposited On:07 Dec 2010 22:50
Last Modified:26 Dec 2012 04:32

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