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

The Society of Naval Architects of Korea (대한조선학회)
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Hydrodynamic Characteristics and Speed Performance of a Full Spade and a Twisted Rudder

전가동타와 비대칭타의 유체동역학적 특성 및 속도성능

  • Choi, Jung-Eun (Maritime Research Institute, Hyundai Heavy Industries, Co. Ltd) ;
  • Kim, Jung-Hun (Maritime Research Institute, Hyundai Heavy Industries, Co. Ltd) ;
  • Lee, Hong-Gi (Maritime Research Institute, Hyundai Heavy Industries, Co. Ltd) ;
  • Park, Dong-Woo (Maritime Research Institute, Hyundai Heavy Industries, Co. Ltd)
  • 최정은 (현대중공업(주) 선박해양연구소) ;
  • 김정훈 (현대중공업(주) 선박해양연구소) ;
  • 이홍기 (현대중공업(주) 선박해양연구소) ;
  • 박동우 (현대중공업(주) 선박해양연구소)
  • Published : 2010.04.20
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Abstract

This article examines hydrodynamic characteristics and speed performances of a ship attached with a full spade and a twisted rudder based on a computational method. For this study, a 13,100 TEU container carrier is selected. The turbulent flows around a ship are analyzed by solving the Reynolds-averaged Navier-Stokes equation together with the application of Reynolds stress turbulence model. The computations are carried out at the conditions of rudder, bare hull, hull-rudder and hull-propeller-rudder. An asymmetric body-force propeller is applied. The speed performance is predicted by the model-ship performance analysis method of the revised ITTC'78 method. The hydrodynamic forces are compared in both rudder-open-water and self-propulsion conditions. The flow characteristics, the speed performance including propulsion factors and the rudder-cavitation performance are also compared. The model tests are conducted at a deep-water towing tank to validate the computational predictions. The computational predictions show that the twisted rudder is superior to the full spade rudder in the respect of the speed and the cavitation performances.

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References

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