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

The Society of Naval Architects of Korea (대한조선학회)
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Study of the Propeller Cavitation Performance Improvement Through the Stern Appendage Modification

선미 부가물 수정에 따른 프로펠러 캐비테이션 성능 향상 연구

  • Jong-Woo Ahn (Korea Research Institute of Ships and Ocean Engineering) ;
  • Young-Ha Park (Korea Research Institute of Ships and Ocean Engineering) ;
  • Gun-Do Kim (Korea Research Institute of Ships and Ocean Engineering) ;
  • Bu-Geun Paik (Korea Research Institute of Ships and Ocean Engineering) ;
  • Han-Shin Seol (Korea Research Institute of Ships and Ocean Engineering) ;
  • Il-Ryong ParK (Department of Naval Architecture and Ocean Engineering, Dong-Eui University)
  • 안종우 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 박영하 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 김건도 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 백부근 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 설한신 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 박일룡 (동의대학교 조선해양공학과)
  • Received : 2022.10.06
  • Accepted : 2022.11.24
  • Published : 2023.02.20
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Abstract

In order to improve the propeller cavitation performance composed of Cavitation Inception Speed (CIS), cavitation extent and pressure fluctuation, it needs to improve the wake distribution that flows into the propeller. The warship propeller cavitation is strongly influenced by the wake created at the V-strut of various appendages. The inflow characteristics of the V-strut were investigated using Computational Fluid Dynamics (CFD) and the twisted angles of the V-strut were aligned with upstream flow. The resistance and self-propulsion tests for the model ship with the existing and modified V-struts were conducted in Towing Tank (TT), and wake distribution, CIS, cavitation observation and pressure fluctuation tests were conducted in Large Cavitation Tunnel (LCT). The propeller behind the modified V-strut showed better cavitation characteristics than that behind the existing V-strut. Another model test was conducted to investigate rudder cavitation performance by the change of the V-strut. The rudder cavitation characteristics were not improved by the change of the operating conditions. On the basis of the present study, it is thought that the stern appendages for better propeller cavitation performance would be developed.

Keywords

Acknowledgement

본 연구는 산업통상자원부와 방위사업청이 지원하는 민군겸용 기술개발사업 19-CM-MU-10 (PNS4520, 3차원 곡면형 비틀림 방향타 기술)의 지원으로 수행되었으며 이에 감사드립니다.

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