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 Tip Vortex Cavitation Behavior and Noise on Hydrofoil using Dissipation Vortex Model and Bubble Theory

소산이 고려된 보오텍스 모델과 버블 이론을 이용한 수중익 날개 끝 보오텍스 캐비테이션 거동 및 소음의 수치적 해석

  • Park, Kwang-Kun (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Seol, Han-Shin (Maritime and Ocean Engineering Research Institute (MOERI), KORDI) ;
  • Lee, Soo-Gab (School of Mechanical and Aerospace Engineering, Seoul National University)
  • 박광근 (서울대학교 기계항공공학부) ;
  • 설한신 (한국해양연구원 해양시스템안전연구소) ;
  • 이수갑 (서울대학교 기계항공공학부)
  • Published : 2006.04.01
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Abstract

Cavitation is the dominant noise source of the marine vehicle. Of the various types of cavitation , tip vortex cavitation is the first appearance type of marine propeller cavitation and it generates high frequency noise. In this study, tip vortex cavitation behavior and noise are numerically investigated. A numerical scheme using Eulerian flow field computation and Lagrangian particle trace approach is applied to simulate the tip vortex cavitation on the hydrofoil. Vortex flow field is simulated by combined Moore and Saffman's vortex core radius equation and Sculley vortex model. Tip vortex cavitation behavior is analyzed by coupled Rayleigh-Plesset equation and trajectory equation. The cavitation nuclei are distributed and released in the vortex flow result. Vortex cavitation trajectories and radius variations are computed according to nuclei initial size. Noise is analyzed using time dependent cavitation bubble position and radius data. This study may lay the foundation for future work on vortex cavitation study and it will provide a basis for proper underwater propeller noise control strategies.

Keywords

References

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Cited by

  1. Numerical Analysis of Tip Vortex and Cavitation of Elliptic Hydrofoil with NACA 662-415 Cross Section vol.32, pp.4, 2018, https://doi.org/10.26748/KSOE.2018.6.32.4.244