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

The Society of Naval Architects of Korea (대한조선학회)
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Development of Twisted Rudder to Reduce Fuel Oil Consumption for Medium Size Container Ship

중형 컨테이너선의 연료절감형 비틀림 타 개발

  • Chun, Ho-Hwan (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Cha, Kyung-Jung (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Lee, Inwon (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Choi, Jung-Eun (Global Core Research Center for Ships and Offshore Plants, Pusan National University)
  • 전호환 (부산대학교 조선해양공학과) ;
  • 차경정 (부산대학교 조선해양공학과) ;
  • 이인원 (부산대학교 조선해양공학과) ;
  • 최정은 (부산대학교 조선해양플랜트글로벌핵심연구센터)
  • Received : 2017.07.25
  • Accepted : 2018.02.14
  • Published : 2018.04.20
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Abstract

Twisted rudder, twisted rudder with bulb, and twisted rudder with bulb and fin have been developed computationally for 3,000 TEU container ship through parametric study. The objective function is to minimize delivered power in model scale. Design variables are twisted angle, rudder bulb diameter and fin angle. The governing equation is Reynolds averaged Navier-Stokes equations in an unsteady turbulent flow and the Reynolds stress model applied for the turbulent closure. A double body model is used for the treatment of free-surface. The calculation was carried out in towing and self-propulsion conditions at design speed. The sliding mesh technique was employed to simulate the flow around the propeller. Form factor is obtained from the towing computation. Self-propulsion point is obtained from the self-propelled computations at two propeller rotating speeds. The delivered power due to the designed twisted rudder, twisted rudder with bulb, and twisted rudder with bulb and fin are reduced by 1.1%, 1.6%, and 2.0%, respectively.

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References

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