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

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Numerical Analysis of Artificial Supercavitation under the Gravity Effect

중력 효과를 받는 인공 초공동에 대한 수치해석

  • Kim, Ji-Hye (Department of Naval Architecture and Ocean Engineering, Chungnam National University) ;
  • Jeong, So-Won (Department of Naval Architecture and Ocean Engineering, Chungnam National University) ;
  • Ahn, Byoung-Kwon (Department of Naval Architecture and Ocean Engineering, Chungnam National University)
  • 김지혜 (충남대학교 선박해양공학과) ;
  • 정소원 (충남대학교 선박해양공학과) ;
  • 안병권 (충남대학교 선박해양공학과)
  • Received : 2017.03.02
  • Accepted : 2017.08.25
  • Published : 2017.10.05
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Abstract

Supercavitation can be generated at relatively lower speeds by injecting compressed air behind the cavitator. As a result, an artificially created supercavity is deformed and its tail tends to rise due to gravitational effects. However, practical prediction of the artificial supercavity currently depends on empirical results. In this study, a mathematical model for the artificial supercavity under the gravity effect is proposed. Based on a boundary element method, geometric characteristics of the supercavity at different flow conditions are examined. The results were compared with an existing empirical formula and also experimental observations carried out at a cavitation tunnel of the Chungnam National University.

Keywords

References

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