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Experimental Study on Artificial Supercavitation of the High Speed Torpedo
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 Title & Authors
Experimental Study on Artificial Supercavitation of the High Speed Torpedo
Ahn, Byoung-Kwon; Jung, So-Won; Kim, Ji-Hye; Jung, Young-Rae; Kim, Sun-Bum;
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 Abstract
Recently supercavitating underwater torpedo moving at high speed (over 200 knots) has been interested for their practical advantage of the dramatic drag reduction. Cavitator located in front of the torpedo plays an important role to generate a natural supercavity and control the motion of the object. Supercavity can be created artificially by injection of compressed gas from the rear of the cavitator at a relatively low speed. In this paper, we investigated physical characteristics of artificial supercavities through cavitation tunnel experiments. One of the main focuses of the study was to measure pressure inside the cavity, and examined variation of the gravity effects appearing according to different amount of injected air. It was also found that a stable supercavity could be sustained at injection rates less than that required to form the stable supercavity because of hysteresis effect.
 Keywords
Cavitator;Supercavitation;Natural Supercavitation;Artificial Supercavitation;
 Language
Korean
 Cited by
1.
파형역산 기법을 이용한 수중표적 탐지 연구,배호석;김원기;김우식;최상문;

한국음향학회지, 2015. vol.34. 6, pp.487-492 crossref(new window)
 References
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2.
B. Ahn, T. Lee, H. Kim and C. Lee, "Experimental Investigation of Supercavitating Flows," Int. Journal of Naval Architecture and Ocean Engineering, Vol. 4, No. 1, pp. 25-32, 2012.

3.
B. Ahn, J. Kim, J. Choi, H. Kim, Y. Nah and D. Lee, "Numerical Analysis of Supercavitating Flows Based on Viscous/Inviscid Method," Journal of the Korea Institute of Military Science and Technology, Vol. 17, No.1, pp. 25-32, 2014. crossref(new window)

4.
J. Franc and Michel, "Fundamentals of Cavitation," Kluwer Academic Publishers, Netherlands, pp. 193-221, 2010.

5.
S. Park and S. H. Rhee, "Computational Analysis fo Turbulent Super-Cavitating Flow Around a Two- Dimensional Wedge-Shaped Cavitator Geometry," Computer and Fluids, Vol. 70, pp. 73-85, 2012. crossref(new window)