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민감도 해석을 통한 선체 부가물이 함정의 조종성능에 미치는 영향 분석

The Effect of Hull Appendages on Maneuverability of Naval Ship by Sensitivity Analysis

  • 김대혁 (서울대학교 조선해양공학과) ;
  • 이기표 (서울대학교 조선해양공학과) ;
  • 김낙완 (서울대학교 조선해양공학과)
  • Kim, Dae Hyuk (Seoul National University, Dept. of Naval Architecture & Ocean Engineering) ;
  • Rhee, Key-Pyo (Seoul National University, Dept. of Naval Architecture & Ocean Engineering) ;
  • Kim, Nakwan (Seoul National University, Dept. of Naval Architecture & Ocean Engineering)
  • 투고 : 2013.10.14
  • 심사 : 2014.02.24
  • 발행 : 2014.04.20

초록

Naval ships have hull appendages which are more exposed to the outside because of its small block coefficient compared with commercial ships. These exposed hull appendages like skeg, strut and shaft line affect the maneuverability of a ship. The effect of hull appendages has considered at initial design stage to estimate more accurate maneuverability. In this paper, sensitivity analysis is used to analyze the effect on maneuverability by hull appendages. 3 DOF maneuvering equations based on Mathematical Modelling Group (MMG) model are used and propeller & rudder model are modified to reflect the characteristics of twin propeller & twin rudder. Numerical maneuvering simulations (Turning test, Zig-zag test) for benchmark naval vessel, David Taylor Model Basin (DTMB) 5415 are performed. In every simulation, it is calculated that stability indices and maneuverability characteristics (Tactical Dia., Advance, 1st Overshoot, Time of complete cycle) with respect to the parameters (area times lift coefficient slope, attachment location) of hull appendages. As a result, two regression formulas are established. One is the relation of maneuverability characteristics and stability indices and the other is the relation of stability indices and hull appendages.

키워드

참고문헌

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피인용 문헌

  1. A sensitivity analysis of a hull’s local characteristic parameters on ship resistance performance vol.21, pp.4, 2016, https://doi.org/10.1007/s00773-016-0378-x
  2. Numerical Analysis of the Wake of a Surface Ship Model Mounted in KRISO Large Cavitation Tunnel vol.53, pp.6, 2016, https://doi.org/10.3744/SNAK.2016.53.6.494