Tip vortex cavitation simulation of a propeller in a Gate Rudder® system

Naz Yilmaz, Serkan Turkmen, Batuhan Aktas, Patrick Fitzsimmons, Noriyuki Sasaki, Mehmet Atlar

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Abstract

The GATE RUDDER® system is a novel propulsion arrangement or Energy Saving Device (ESD) inspired by the new concept of elementary propulsive efficiency and its optimization in a ship’s wake to recover more energy. The performance of a GATE RUDDER® system in the hull wake, therefore, is important not only for the efficiency but also from the cavitation, noise and vibration point of view. The World’s first gate rudder was installed on a 2,400 GT container ship in 2017 in Japan. By using the data associated with this vessel and other model test data with different ships, this paper explores the differences on the efficiency and cavitation performance of a conventional rudder and propeller system with the GATE RUDDER® system using Experimental and Computational Fluid Dynamics (EFD and CFD) approaches. There is specific emphasis on the accurate simulation of the tip vortex cavitation of the propeller in both rudder systems which has been modelled by using Yilmaz’s recently developed advanced adaptive mesh refinement approach. The results of the CFD simulations are compared with the results of the model tests conducted in the Emerson Cavitation Tunnel and the full-scale experiences with the above-mentioned container vessel as discussed in the paper.
Original languageEnglish
Number of pages9
Publication statusPublished - 15 Nov 2018
EventA. Yücel Odabaşı Colloquium Series
3rd International Meeting on Progress in Propeller Cavitation
And its Consequences: Experimental and Computational Methods for Predictions
- İstanbul, Turkey
Duration: 15 Nov 201816 Nov 2018

Conference

ConferenceA. Yücel Odabaşı Colloquium Series
3rd International Meeting on Progress in Propeller Cavitation
And its Consequences: Experimental and Computational Methods for Predictions
CountryTurkey
Cityİstanbul
Period15/11/1816/11/18

Keywords

  • Gate Rudder
  • propeller cavitation
  • cavitation tunnel tests
  • tip vortex cavitation
  • CFD
  • adaptive mesh refinement

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    Yilmaz, N., Turkmen, S., Aktas, B., Fitzsimmons, P., Sasaki, N., & Atlar, M. (2018). Tip vortex cavitation simulation of a propeller in a Gate Rudder® system. Paper presented at A. Yücel Odabaşı Colloquium Series
    3rd International Meeting on Progress in Propeller Cavitation
    And its Consequences: Experimental and Computational Methods for Predictions , İstanbul, Turkey.