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

The Society of Naval Architects of Korea (대한조선학회)
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Two-dimensional Model Tests for Rudder Gap Cavitation and Suppression Devices

타 간극 캐비테이션과 저감장치에 관한 2 차원 모형 실험

  • Lee, Chang-Min (Dept. of Naval Architecture & Ocean Engineering, Seoul National University) ;
  • Oh, Jung-Keun (Jungseok Research Institute of International Logistics and Trade, Inha University) ;
  • Rhee, Shin-Hyung (Dept. of Naval Architecture & Ocean Engineering, Research Institute of Marine Systems Engineering, Seoul National University)
  • 이창민 (서울대학교 조선해양공학과) ;
  • 오정근 (인하대학교 정석물류통상연구원) ;
  • 이신형 (서울대학교 조선해양공학과 및 해양시스템공학 연구소)
  • Published : 2010.04.20
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Abstract

The increasing size and speed of cargo ships result in high speed flow in propeller slipstream, and thereby cavitation is frequently observed on and around a rudder system. Rudder gap cavitation is the most difficult one to control and suppress among various types of the cavitation on a rudder system. In the present study, experiments of the incipient cavitation and pressure measurement were carried out for typical cargo ship rudder sections with and without the suppression devices, which were suggested by the authors. Fundamental understanding of the rudder gap cavitation inception was obtained along with its relevance to the surface pressure distribution. It is confirmed that the gap flow blocking devices effectively suppress the rudder gap cavitation and, at the same time, augment lift.

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References

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