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http://dx.doi.org/10.3744/SNAK.2018.55.4.330

Fundamental Studies for Ventilated Supercavitation Experiments in New High-speed Cavitation Tunnel  

Paik, Bu-Geun (Korea Research Institute of Ships & Ocean Engineering)
Kim, Min-Jae (Agency for Defense Development)
Jung, Young-Rae (Agency for Defense Development)
Lee, Seung-Jae (Seoul National University)
Kim, Kyoung-Youl (Korea Research Institute of Ships & Ocean Engineering)
Ahn, Jong-Woo (Korea Research Institute of Ships & Ocean Engineering)
Seol, Han-Shin (Korea Research Institute of Ships & Ocean Engineering)
Kim, Ki-Sup (Korea Research Institute of Ships & Ocean Engineering)
Publication Information
Journal of the Society of Naval Architects of Korea / v.55, no.4, 2018 , pp. 330-340 More about this Journal
Abstract
In the present works, the High-speed Cavitation Tunnel (HCT) has been designed and manufactured to have the large test section to conduct various supercavitation experiments. The large amount of air ventilated behind a cavitator produces lots of tiny bubbles, which prevent clear observation of supercavitation at the test section. To collect small bubbles effectively, a bubble collecting section of large volume is equipped upstream of the test section. HCT has the test section dimension of $0.3^H{\times}0.3^W{\times}3.0^L\;m^3$ and provides maximum flow speed of 20.4 m/s at the test section. The blockage and Froude effects on the ventilated supercavitation are investigated successfully at the test section. The basic studies such as the supercavitation evolution, drag measurements and cavity shape extraction with air flow rate are also carried out in HCT.
Keywords
Ventilated supercavitation; High-speed cavitation tunnel; Minimum cavitation number; Froude effect; Blockage effect; Drag coefficient; Shadowgraph technique;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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