Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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A Study on the Course Keeping Ability under Wave Condition Considering Ship's Maneuverability

조종성능을 고려한 파랑 중 선박의 직진성능에 관한 연구

  • Kang, Dong-Hoon (Department of Naval Architecture and Ocean Engineering, Gyeongsang Natioinal University) ;
  • Lee, Soon-Sup (Department of Naval Architecture and Ocean Engineering, Gyeongsang Natioinal University) ;
  • Lee, Seung-Jae (Division of Naval Architecture and Ocean System Engineering, Korea Maritime University)
  • 강동훈 (경상대학교 조선해양공학과) ;
  • 이순섭 (경상대학교 조선해양공학과) ;
  • 이승재 (한국해양대학교 조선해양시스템공학부)
  • Received : 2013.02.05
  • Accepted : 2013.04.25
  • Published : 2013.04.30
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Abstract

Course keeping ability of ships under wave are analyzed with wave. The simulation with three degrees of freedom is developed and 3-D source distribution method is applied to get wave force for the simulation. The simulation is conducted with the restriction of maximum rudder angle and time delay of control and regular wave and irregular wave are considered as the source of external forces. Simulations with ships which have different maneuverability with tuned hydrodynamic coefficients are developed to assess the variation of the course keeping ability depending on the ship's maneuvering characteristics. The course Keeping ability is evaluated by comparison of distance while the ships are simulated with autopilot control.

파랑 중 선박의 직진성능을 시뮬레이션을 통하여 비교 검토하였다. 시뮬레이션을 구성하기위해 선박의 3자유도 조종운동방정식을 사용했으며, 선박에 가해지는 파랑강제력은 3차원 특이점 분포법을 사용하여 계산하였다. 시뮬레이션의 외란으로서 규칙파와 불규칙파를 사용하였고 최대사용타각과 제어시간지연을 제어기의 제한조건으로 설정하였다. 조종성능에 따른 직진성능을 검토하기 위해 유체력 미계수를 인위적으로 변화시킴으로서 조종성능이 다른 선박의 시뮬레이션을 구성하였다. Autopilot제어기를 사용한 일정시간의 선박의 직진 시뮬레이션을 수행하고 해당시간동안의 직진거리를 비교하여 선박의 직진성능을 검토하였다.

Keywords

References

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