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

The Society of Naval Architects of Korea (대한조선학회)
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Numerical Internal Flow Analysis of Intake Duct of Waterjet Propulsion

워터제트 추진기 유입관의 내부유동 전산해석

  • Yun, Hyun-Suk (School of Mechanical Engineering, Pusan National University) ;
  • Park, Warn-Gyu (School of Mechanical Engineering, Pusan National University) ;
  • Chun, Ho-Hwan (Department of Naval Architecture & Ocean Engineering, Pusan National University) ;
  • Kim, Moon-Chan (Department of Naval Architecture & Ocean Engineering, Pusan National University)
  • 윤현석 (부산대학교 기계공학부) ;
  • 박원규 (부산대학교 기계공학부) ;
  • 전호환 (부산대학교 조선해양공학과) ;
  • 김문찬 (부산대학교 조선해양공학과)
  • Published : 2005.02.01
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Abstract

Waterjet propulsion is widely used to thrust high speed marine vessels in excess of 30-35 knots by virtue of the high propulsive efficiency, good maneuverability, and less cavitation. From the aspect of power loss, approximately $7-9\%$ of the total power is lost in intake duct due to the flow separation, nonuniformity, etc. Thus, detail understanding of flow phenomena occurring within intake duct is essential to reduce the power loss, as well as noise and vibration. The present work solved 30 incompressible RANS equations to provide complicated viscous flow features of intake duct. The numerical results were compared with experiments and good agreements were obtained for three jet velocity ratios.

Keywords

References

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