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

The Society of Naval Architects of Korea (대한조선학회)
권호 표지
DOI QR코드

DOI QR Code

Numerical Calculation and Validation for Rudder Cavitation of a Large Container Ship

초대형 컨테이너선박 방향타의 캐비테이션 수치계산 및 검증

  • Kim, Gun-Do (Maritime and Ocean Engineering Research Institute(MOERI), KORDI) ;
  • Moon, Il-Sung (Maritime and Ocean Engineering Research Institute(MOERI), KORDI) ;
  • Kim, Kyoung-Youl (Maritime and Ocean Engineering Research Institute(MOERI), KORDI) ;
  • Van, Suk-Ho (Maritime and Ocean Engineering Research Institute(MOERI), KORDI) ;
  • Lee, Chang-Sup (Dept. of Naval Architecture and Ocean Engineering, Chungnam National Univ.)
  • 김건도 (한국해양연구원 해양시스템안전연구소) ;
  • 문일성 (한국해양연구원 해양시스템안전연구소) ;
  • 김경열 (한국해양연구원 해양시스템안전연구소) ;
  • 반석호 (한국해양연구원 해양시스템안전연구소) ;
  • 이창섭 (충남대학교 선박해양공학과)
  • Published : 2006.10.20
Download PDF
⟨ Previous Next ⟩

Abstract

With the increase of ship size and speed, the loading on the propeller is increasing, which in turn increases the rotational speed in the propeller slipstream. The rudder placed in the propeller slip stream is therefore subject to severe cavitation with the increased angle of attack due to the increased rotational induction speed of the propeller. In the present paper the surface panel method, which has been proved useful in predicting the sheet cavitation on the propeller blade, is applied to solve the cavity boundary value problem on the rudder. The problem is then solved numerically by discretizing the rudder and cavity surface elements of the quadrilateral panels with constant strengths of sources and dipoles. The strengths of the singularities are determined satisfying the boundary conditions on the rudder and cavity surfaces. The extent of the cavity, which is unknown a priori, is determined by iterative procedure. Series of numerical experiments are performed increasing the degree of complexity of the rudder geometry and oncoming flows from the simple hydrofoil case to the real rudder in the circumferentially averaged propeller slipstream. Numerical results are presented with experimental results.

Keywords

References

  1. 공도성, 한재문, 유재문, 2002, '선미 후류에서 작동하는 혼타의 압력분포에 관한 연구,' 대한조선학회 논문집, 제 39권, 제 2호, pp. 1-10
  2. 김영기, 이진태, 이창섭, 서정천, 1993, '포텐셜을 기저로한 패널법에 의한 프로펠러의 정상 성능 해석,' 대한조선학회 논문집, 제 30권, 제 1호, pp. 73-86
  3. 이창섭, 1989, '양력판 이론에 의한 2 차원 수중익의 부분 캐비티 문제 해석,' 대한조선학회지, 제 26권, 제 4호, pp. 27-34
  4. 이창섭, 서정천, 1995, '쌍곡면 패널에서의 다이폴 분포,' 대한조선학회 논문집, 제 32권, 제 2호, pp. 32-42
  5. 이창섭, 이진태, 1990, '선미 후류-프로펠러 상호작용을 고려한 유효반류추정법,' 대한조선학회 논문집, 제 27권, 제 2호, pp. 1-12
  6. 한재문, 이창섭, 1996, '프로펠러 캐비테이션에 의해 유기된 변동압력 계산,' 대한조선학회 춘계학술발표회, pp. 434-437
  7. Greeley, D.S. and Kerwin, J.E., 1982, 'Numerical Method for Propeller Design and Analysis in Steady Flow,' Trans. of SNAME, Vol. 90, pp. 415-453
  8. Han, J.M., Kong, D.S., Song, I.H. and Lee, C.S., 2001, 'Analysis of the Cavitating Flow around the Horn-Type Rudder in the Race of a Propeller,' Proc. Cavitation 2001, Session B9.005, pp. 1-8
  9. Kim, Y.G., Lee, C.S. and Moon, I.S., 1995, 'Prediction of Hull Surface Pressure Induced by a Cavitating Propeller,' Proc. 6-th Intl Symp. on Practical Design of Ships and Mobile Units, Vol 1. Sept 17-22. pp. 308-320
  10. Kim. Y.G. and Lee, C.S., 1996, 'Prediction of Unsteady Performance of Marine Propellers with Cavitation using Surface-panel Method,' Proc. 21-st Symp. on Naval Hydrodynamics, Office of Naval Research. Vol. IV, Trondheim. Norway. pp. 16-31
  11. Kerwin, J.E. and Lee, C.S., 1978, 'Prediction of Steady and Unsteady Marine Propeller Performance by Numerical Lifting-surface Theory.' Trans. SNAME, Vol. 86, pp. 218-253
  12. Lee, C.S., 1979, Prediction of Steady and Unsteady Performance of Marine Propeller with or without Cavitation by Numerical Lifting-surface Theory, Ph. D Thesis. MIT
  13. Lee. C.S., Kim. Y.G. and Suh, J.C., 1994, 'A Surface Panel Method for Analysis of Hydrofoils,' J. of Ship Research, Vol. 38, No.3, pp. 175-181
  14. Natarajan. S., 2003. Computational Modeling of Rudder Cavitation and Propeller/ Rudder Interaction, Report No. 03-5, Dept of Civil Engineering, Univ. of Texas at Austin
  15. Suh, J.C., Lee, J.T. and Suh, S.B., 1992, 'A Bilinear Source and Doublet Distribution over a Planar Panel and Its Applications to Surface Panel Methods,' Proc. 19-th Symp. on Naval Hydrodynamics, Office of Naval Research, Seoul, pp, 837-847