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

The Society of Naval Architects of Korea (대한조선학회)
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A Study on the Rudder Shapes for the Suppression of Cavitation around a Horn-type Rudder

캐비테이션 감소를 위한 혼타의 형상 연구

  • Pak, Kyung-Ryeong (Naval Architecture and Ocean Engineering, Graduate School, Inha University) ;
  • Lee, Young-Gill (Naval Architecture and Ocean Engineering, Inha University)
  • 박경령 (인하대학교 대학원 조선해양공학과) ;
  • 이영길 (인하대학교 기계공학부 조선해양공학)
  • Received : 2010.03.03
  • Accepted : 2010.08.13
  • Published : 2010.08.20
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Abstract

This paper studies on the rudder shapes for the suppression of the cavitation around a horn-type rudder. To improve the problems due to cavitation, there have been several studies. However, these some studies are recognized as incomplete ways to suppress the rudder cavitation. In this study, the section shapes to suppress the cavitation phenomena are determined by moving the location of maximum thickness for reducing the curvature variation and changing the radius of leading edge. Also, in the pintle part, the curvature radius of the inlet outlet edge of rudder plate is changed. During the design of rudder shape, two-dimensional numerical simulations are firstly performed because those offer some advantages with that cavitation phenomena becomes predictable for a short time, and then the three-dimensional numerical simulations are performed to confirm the determination. The time mean distribution of the propeller slipstream is imposed on the inlet boundary condition. As some results, this paper shows the effects reducing the range of the occurrence of cavitation, and suggests the references on the design of a horn-type rudder for the suppression of cavitation phenomena.

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References

  1. Boo, K.T., Song, I.H. and Shin, S.C., 2004, "Numerical Simulation for the Rudder in order to Control the Cavitation Phenomena," 2004, Journal of Ship and Ocean Technology, Vol. 8, No. 1, pp. 42-50.
  2. Choi, J.E. and Chung, S.H. 2007, "Characteristics of gap flow of a two- dimensional horn-type rudder section," Journal of the Society of Naval Architects of Korea, Vol. 44, No. 2, pp. 101-110. https://doi.org/10.3744/SNAK.2007.44.2.101
  3. Choi, J.E., Chung, S.H. and Kim J.H., 2007, "Cavitating-flow characteristics around a horn-type rudder," Journal of the Society of Naval Architects of Korea, Vol. 44, No. 3, pp. 228-237. https://doi.org/10.3744/SNAK.2007.44.3.228
  4. John A. Kelly, 1950, "Effects of modifications to the leading-edge region on the stalling characteristics of the NACA 631-012 airfoil section," NCA TN 2228.
  5. Kim, M.C., Lee, U.S. and Byun, T.Y., 2008, "Study on optimization of anti-erosion rudder section of large container ship by genetic algorithm," Journal of the Society of Naval Architects of Korea, Vol. 45, No. 4, pp. 403-410. https://doi.org/10.3744/SNAK.2008.45.4.403
  6. Kim, S., Park, J., Kim, Y., Jang, Y., Choi, Y. and Paik, B., 2006, "An experimental research on gap cavitation erosion of semi-spade rudder," Journal of the Society of Naval Architects of Korea, Vol. 43, No. 5, pp. 578-585. https://doi.org/10.3744/SNAK.2006.43.5.578
  7. Kim, Y.G., Kim, S.Y., Kim, S.P. and Lee, S.W., 2004, "Experimental study on the variation of maneuvering characteristics of container ship with rudder type," Journal of the Society of Naval Architects of Korea, Vol. 41, No. 5, pp. 28-33. https://doi.org/10.3744/SNAK.2004.41.5.028
  8. SNAK, 2009, Ship's Resistance and Propulsion, Jisungsa.
  9. Paik, B.G., Kim K.Y., Ahn, J.W., Kim, Y.S., Kim, S.P. and Park, J.J., 2006, "Experimental investigation on the gap cavitation of semispade rudder," Journal of the Society of Naval Architects of Korea, Vol. 43, No. 4, pp. 422-430. https://doi.org/10.3744/SNAK.2006.43.4.422