Mechanism of Cavitation Inception and the Related Scale-Effects Problem

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Abstract
An experimental investigation of incipient cavitation is described and the relationship between these experiments and current theories is discussed. Experiments have indicated that the cavitation number for inception varies with free-stream velocity and body size for both streamlined and bluff bodies. Preliminary studies of the mechanism of cavitation were conducted in order to understand the reasons for the variations in cavitation performance. Photographic investigations have disclosed the effect of the boundary layer on cavitation inception for both streamlined and bluff bodies. In addition, this study has shown that tensions exist in the flow of ordinary water at incipient cavitation.

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