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http://dx.doi.org/10.5407/jksv.2022.20.1.018

A study on the shape of supercavitation center line change according to the gravity and angle of attack effect  

Yi, Jong-Ju (Agency for Defense Development)
Kim, Min-Jae (Agency for Defense Development)
Paik, Bu-Geun (Korea Research Institute of Ships & Ocean Engineering)
Kim, Kyung Chun (School of Mechanical Engineering Pusan National University)
Publication Information
Journal of the Korean Society of Visualization / v.20, no.1, 2022 , pp. 18-28 More about this Journal
Abstract
In this study, a cavity shape measurement experiment was conducted by changing the diameter and the angle of attack of a disk cavitator. Since the gravity effect is proportional to the cavity volume, the larger the cavity, the greater the effect. It is concluded that the gravity effect becomes smaller as the cavitation number decreases because of a short cavity maintaining time. The cavity centerline rises in case of the positive angle of attack and descends in case of the negative angle of attack. Since the effect of the angle of attack is inversely proportional to the square of the cavity radius, the effect of the angle of attack becomes dominant in the vicinity of the cavitator. It is judged that the horizontal section of the cavity centerline cannot be extended because the factors affecting the gravity effect and the angle of attack effect are different.
Keywords
Supercavitation; Gravity Effect; Angle of Attack Effect; Supercavity Centerline;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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