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

The Society of Naval Architects of Korea (대한조선학회)
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A Numerical Study on the Control of the Gap Flow Using a Fluid Supply Device

유체 공급장치를 활용한 간극유동 제어에 관한 수치적 연구

  • Seo, Dae-Won (Department of Naval Architecture and Ocean Engineering, Inha University) ;
  • Oh, Jung-Keun (Jungseok Research Institute of International Logistics and Trade, Inha University) ;
  • Lee, Seung-Hee (Department of Naval Architecture and Ocean Engineering, Inha University)
  • 서대원 (인하대학교 선박공학과) ;
  • 오정근 (인하대학교 정석물류통상연구원) ;
  • 이승희 (인하대학교 선박공학과)
  • Published : 2009.12.20
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Abstract

Recently, horn-type rudders are generally being used at high speed container ships and are frequently suffering from the cavitation occurs on the rudder surface in the vicinity of the gap between the horn and rudder plate. In the present study, a fluid supplying device is employed as to decrease the gap cavitation of the horn-type rudder. The device is devised to inject the water against the pressure side through the nozzle installed inside of the gap to control the gap flow. Numerical calculations are performed to investigate the effectiveness of the device and the results show that the device can noticeably reduce the gap cavitation. The rates of water injection for achievement of the maximum retardations of gap flow are also sought.

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References

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