유한요소법을 이용한 파랑 중 선박운동의 시간영역 해석기법 개발

다국어 초록 (Multilingual Abstract)

The Three-dimensional ship motion with forward speed was solved by a finite element method in the time domain. A boundary value problem was described in the frame if a fixed-body reference and the problem was formulated according to Double-Body and Neumann-Kelvin linearizations. Laplace's equation with boundary conditions was solved by a classical finite element method based on the weak formulation. Chebyshev filtering used to get rid of an unwanted saw-tooth wave and a wave damping zone was adopted to impose a numerical radiation condition. The time marching of the free surface was performed by the 4th order Adams-Bashforth-Moulton method. Wigley I and Wigely Ⅲ models were considered for numerical validation. The hydrodynamic coefficiets and wave exciting forces were validared by a comparison with experimental data and numerical results of the Wigley Ⅰ. The effects of the linearization are also discussed. The motion RAO was also checked with a Wigley Ⅲ model through mono-chromatic and multi-chromatic regular waves.

참고문헌 (Reference)

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11 배광준, "3차원 자유표면파 문제에서의 국소유한 요소법의 응동" 24 (24): 1987