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A numerical and experimental study on the performance of a twisted rudder with wavy configuration

  • Shin, Yong Jin (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Kim, Moon Chan (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Lee, Joon-Hyoung (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Song, Mu Seok (Department of Naval Architecture and Ocean Engineering, HongIk University)
  • Received : 2017.11.08
  • Accepted : 2018.02.27
  • Published : 2019.01.31

Abstract

In this paper, a Wavy Twisted Rudder (WTR) is proposed to address the discontinuity of the twisted section and increase the stalling angle in comparison to a conventional full-spade Twisted Rudder (TR). The wave configuration was applied to a KRISO Container Ship (KCS) to confirm the characteristics of the rudder under the influence of the propeller wake. The resistance, self-propulsion performance, and rudder force at high angles of the wavy twisted rudder and twisted rudder were compared using Computational Fluid Dynamics (CFD). The numerical results were compared with the experimental results. The WTR differed from the TR in the degree of separation flow at large rudder angles. This was verified by visualizing the streamline around the rudder. The results confirmed the superiority of the WTR in terms of its delayed stall and high lift-drag ratio.

Keywords

References

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