한국군사과학기술학회지 (Journal of the Korea Institute of Military Science and Technology)

  • 제18권3호
  • /
  • Pages.300-308
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  • 2015
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  • 1598-9127(pISSN)
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  • 2636-0640(eISSN)
한국군사과학기술학회 (The Korea Institute of Military Science and Technology)
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고속 어뢰의 인공 초공동 특성에 대한 실험 연구

Experimental Study on Artificial Supercavitation of the High Speed Torpedo

  • 안병권 (충남대학교 선박해양공학과) ;
  • 정소원 (충남대학교 선박해양공학과) ;
  • 김지혜 (충남대학교 선박해양공학과) ;
  • 정영래 (국방과학연구소 제6기술연구본부) ;
  • 김선범 (국방과학연구소 제6기술연구본부)
  • Ahn, Byoung-Kwon (Department of Naval Architecture & Ocean Engineering, Chungnam National University) ;
  • Jung, So-Won (Department of Naval Architecture & Ocean Engineering, Chungnam National University) ;
  • Kim, Ji-Hye (Department of Naval Architecture & Ocean Engineering, Chungnam National University) ;
  • Jung, Young-Rae (The 6th Research and Development Institute, Agency for Defense Development) ;
  • Kim, Sun-Bum (The 6th Research and Development Institute, Agency for Defense Development)
  • 투고 : 2014.11.18
  • 심사 : 2015.05.22
  • 발행 : 2015.06.05
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초록

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.

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참고문헌

  1. B. Ahn, H. Jang, H. Kim and C. Lee, "Numerical Analysis of Axisymmetric Supercavitating flows," 8th Symposium on Cavitation, pp. 637-642, 2012.
  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. https://doi.org/10.9766/KIMST.2014.17.1.025
  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. https://doi.org/10.1016/j.compfluid.2012.09.012