Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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A study on optimization of duct shape of electric hubless rim-driven propeller

전기구동 림 추진기의 덕트 형상 최적화 연구

  • Yong-beom PYEON (Korea Institute of Fisheries and Ocean Engineering) ;
  • Jae-Hyun BAE (Fisheries Engineering Research Division, National of Fisheries Science) ;
  • Hyoung-Ho KIM (School of Mechanical Engineering, Gyeongsang National University) ;
  • Chang-Je LEE (Institute of Maritime Industry, Korea Maritime and Ocean University)
  • 편용범 (한국수산해양공학연구소) ;
  • 배재현 (국립수산과학원 수산공학과) ;
  • 김형호 (경상국립대학교 기계공학부) ;
  • 이창제 (한국해양대학교 해사산업연구소)
  • Received : 2023.01.19
  • Accepted : 2023.02.22
  • Published : 2023.02.28
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Abstract

This study analyzed the duct characteristics of hubless rim-driven propeller (RDP) used in underwater robots. In the previous study, flow visualization experiments were performed with an advancing ratio of 0.2 to 1. The vortex at the front of the duct increased in strength while maintaining its size as the advancing ratio decreased. Therefore, it is necessary to study the optimization of the duct shape. Conventional propeller thrusters use acceleration/deceleration ducts to increase their efficiency. However, unlike conventional propellers, it is impossible to apply to airfoil acceleration/deceleration ducts due to the RDP structure. In this study, duct wake flow characteristics, thrust force, and efficiency according to the duct shape of RDP were analyzed using numerical analysis techniques. Duct design is limited and six duct shapes were designed. As a result, an optimized duct shape was designed considering duct wake flow characteristics, thrust force, and efficiency. The shape that the outlet width of the RDP was kept constant until the end of the duct showed higher thrust force and efficiency.

Keywords

Acknowledgement

이 논문은 2022년도 교육부의 재원으로 한국연구재단의 지원을 받아 수행된 기초연구사업(No. 2022R1I1A1A01070686)과 환경부의 재원으로 한국환경산업기술원의 수생태계 건강성 확보 기술개발사업의 지원(1485018576)을 받아 연구되었습니다.

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