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

The Society of Naval Architects of Korea (대한조선학회)
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Study on the Angle-of-Attack Characteristics of the Rudder in Rotating Propeller Flow

프로펠러 회전류에서 작동하는 방향타의 받음각 특성 연구

  • Jung, Jae Hwan (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Baek, Dong Geun (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Yoon, Hyun Sik (Global Core Research Center for Ships and Offshore Plants, Pusan National University) ;
  • Kim, Ki-Sup (Marine Transportation Research Division, KIOST/MOERI) ;
  • Paik, Bu-Geun (Marine Transportation Research Division, KIOST/MOERI)
  • 정재환 (부산대학교 조선해양공학과) ;
  • 백동근 (부산대학교 조선해양공학과) ;
  • 윤현식 (부산대학교 조선해양플랜트글로벌핵심연구센터) ;
  • 김기섭 (한국해양과학기술원 선박해양플랜트연구소 해양운송연구부) ;
  • 백부근 (한국해양과학기술원 선박해양플랜트연구소 해양운송연구부)
  • Received : 2013.08.14
  • Accepted : 2013.10.15
  • Published : 2013.12.20
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Abstract

This study aims at numerically investigating the angle of attack characteristics of the rudder behind a rotating propeller. The rotating propeller of 5 blades and the full spade rudder are placed in the numerical water tunnel with a uniform flow condition to consider propeller-rudder interaction. The turbulence closure model is employed to simulate the three-dimensional unsteady incompressible viscous turbulent flow around the propeller and the rudder. The present numerical method are well verified by comparing with the experimental results. In order to identify the dependence of the angle of attack of the rudder on the rudder angle, a wide range of rudder angles is considered. The present study carried out the quantitative and qualitative analysis of the angle of attack in terms of the pressure distribution, streamlines and the evaluation of the flow incidence, resulting in that the angle of attack increases as we move from the root and the tip to the center of the rudder, regardless of the rudder angle. The distribution of the angle-of-attack along the span is strongly affected by rotating propeller flow and rudder angle. Consequently, the distribution of the angle-of-attack of the oncoming flow against the rudder leading edge plays a role in determination of rudder performance.

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References

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