Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Numerical Analysis of the Cavitation Around an Underwater Body with Control Fins

제어핀이 달린 수중 물체의 공동 수치해석

  • Kim, Hyoung-Tae (Department of Naval Architecture & Ocean Engineering, Chungnam National University) ;
  • Choi, Eun-Ji (Department of Naval Architecture & Ocean Engineering, Chungnam National University) ;
  • Knag, Kyung-Tae (Department of Naval Architecture & Ocean Engineering, Chungnam National University) ;
  • Yoon, Hyun-Gull (Agency for Defense Development)
  • 김형태 (충남대학교 선박해양공학과) ;
  • 최은지 (충남대학교 선박해양공학과) ;
  • 강경태 (충남대학교 선박해양공학과) ;
  • 윤현걸 (국방과학연구소)
  • Received : 2018.11.16
  • Accepted : 2019.01.29
  • Published : 2019.08.20
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Abstract

The evolution of the cavity and the variation of the drag for an underwater body with control fins are investigated through a numerical analysis of the steady cavitating turbulent flow. The continuity and the steady-state RANS equations are numerically solved using a mixture fluid model for calculating the multiphase turbulent flow of air, water and vapor together with the SST $k-{\omega}$ turbulence model. The method of volume of fluid is applied by the use of the Sauer's cavitation model. Numerical solutions have been obtained for the cavity flow about an underwater body shaped like the Russian high-speed torpedo, Shkval. Results are presented for the cavity shape and the drag of the body under the influence of the gravity and the free surface. The evolution of the cavity with the body speed is discussed and the calculated cavity shapes are compared with the photographs of the cavity taken from an underwater launch experiment. Also the variation of the drag for a wide range of the body speed is investigated and analyzed in details.

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References

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