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 Non-Axisymmetric Supercavitating Flow Around a Three-Dimensional Cavitator with an Angle of Attack

받음각을 갖는 3차원 캐비테이터에서 발생하는 비축대칭 초공동 유동해석

  • Dae-Gyu Hwang (Department of Autonomous Vehicle System Engineering, Chungnam National University) ;
  • Byoung-Kwon Ahn (Department of Autonomous Vehicle System Engineering, Chungnam National University)
  • 황대규 (충남대학교 자율운항시스템공학과) ;
  • 안병권 (충남대학교 자율운항시스템공학과)
  • Received : 2023.03.22
  • Accepted : 2023.06.07
  • Published : 2023.08.20
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Abstract

In this study, morphological and hydrodynamic characteristics of the non-axisymmetric supercavity generated behind a disk-shaped cavitator were examined. By extending the previous study on axisymmetric supercavitating flow based on a boundary element method, hydrodynamic forces acting under the angle of attack condition of 0 to 30 ° and shape characteristics of the supercavity were analyzed. The results revealed that increasing the angle of attack by 30 ° reduced the length and width of the cavity by about 15% and the volume by about 40 %. An empirical formula that can quantitatively estimate the geometrical characteristics and change of the cavity was derived. It is expected that this method can be used to evaluate the shape information and force characteristics of the supercavity for the control of the vehicle in a very short time compared to the viscous analysis in the initial design stage of the supercavity underwater vehicle.

Keywords

Acknowledgement

본 연구는 과학기술정보통신부의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(RS-2023-00208512).

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