Advertisement

Journal of Marine Science and Technology

, Volume 14, Issue 3, pp 310–321 | Cite as

Design practice for the stern hull form of a twin-skeg ship

  • Dong-Woo ParkEmail author
  • Ho-Hwan Chun
Original Article

Abstract

Hydrodynamic standards have been derived for the improvement of propulsive performance of twin-skeg hull forms. Three important physical observations were used in the optimization of design practice for the stern hull form of twin-skeg ships: limiting streamline pattern on the inner and outer skeg surface of a stern skeg, the balance between the flow intensity over the inner and outer skeg surface of a stern skeg and nominal wake distribution in the propeller plane. Numerical calculations and model tests have been compared to validate a CFD code used in the current work. Based on the stern flow analysis for the evaluation of self-propulsion performance, effects of stern skeg arrangement on the propulsion efficiency, i.e. the distance between skegs and the angle of the skeg with respect to shaft centerline, were intensively investigated. An optimized hull form design for a twin-skeg ship was developed using the design practice derived in this work.

Keywords

Twin-skeg ship Hydrodynamic standards Stern flow Optimized hull form CFD Model test at towing tank 

References

  1. 1.
    Kim J, Park IR, Kim KS, Van SH (2005) RANS computation of turbulent free surface flow around a self-propelled KLNG carrier. J SNAK 42(6):583–592Google Scholar
  2. 2.
    Kim HT, Kim HT, Van SH (2007) Numerical analysis of flow characteristics of a twin-skeg container ship with variation of stern hull shape. J SNAK 44(6):551–563Google Scholar
  3. 3.
    Kim JJ, Paik KJ, Lee YC, Kim HT (2006) A numerical study of turbulent viscous flow around a self-propelled ship. In: Proceeding of the annual spring meeting, SNAK, pp 548–557Google Scholar
  4. 4.
    Stern F, Wilson RV, Coleman H, Paterson EG (2001) Comprehensive approach to verification and validation of CFD simulations-Part 1: methodology and procedures. ASME J Fluids Eng 123(4):793–802CrossRefGoogle Scholar
  5. 5.
    Stern F, Wilson RV, Coleman H, Paterson EG (2001) Comprehensive approach to verification and validation of CFD simulations-Part 2: application for Rans simulation of a cargo/container ship. ASME J Fluids Eng 123(4):803–810CrossRefGoogle Scholar
  6. 6.
    ITTC (1978) Report of performance committee. 15th ITTC, HagueGoogle Scholar
  7. 7.
    Boo KT, Hong CB (2006) Self-propulsion performance using CFD. SNAK Annual Autumn MeetingGoogle Scholar
  8. 8.
    Hino T (2005) In: Proceeding of CFD Workshop. Tokyo, JapanGoogle Scholar
  9. 9.
    Kodama Y (1994) In: Proceedings of CFD workshop Tokyo 1994. JapanGoogle Scholar
  10. 10.
    Larsson L (1980) SSPA-ITTC workshop on ship boundary layers. SSPA Publication No. 90Google Scholar
  11. 11.
    Larsson L, Patel VC, Dyne G (1991) Ship Viscous Flow: Proceedings of 1990 SSPA-CTH-IIHR Workshop. Flowtech International AB, Gothenburg, SwedenGoogle Scholar
  12. 12.
    Larsson LF, Stern F, Bertram V (2000) A workshop on numerical ship hydrodynamics, Gothenburg, SwedenGoogle Scholar
  13. 13.
    Park IR, Kim WJ, Van SH (2004) Grid generation and flow analysis around a twin-skeg container ship. J Soc Naval Arch Korea 41(1):15–22Google Scholar

Copyright information

© JASNAOE 2009

Authors and Affiliations

  1. 1.Maritime Research Institute, Hyundai Heavy Industries Co.UlsanSouth Korea
  2. 2.Department of Naval Architecture and Ocean EngineeringPusan National UniversityBusanSouth Korea

Personalised recommendations