時間領域Green関数法による波浪中船体運動の計算

概要

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A time-domain Green function method is developed and applied to ships with forward speed in waves. A Liapis's computation method for the impulsive wave source is improved from the point of view of the CPU time and numerical accuracy. The improved computation method, which enables to save the CPU time more than 60% of original one with keeping the accuracy of five decimals, is applied to the integral equation in the time-domain and the radiation and diffraction problems for a modified Wigley model and a Series-60 (C_B=0.6) model are solved within the framework of the linear theory. The obtained numerical results are compared not only with experiments but also with another typical computation methods; strip method and frequency-domain Green function method. Through the comparisons on the hydrodynamic forces and ship motions the efficiency of the present is confirmed.
社団法人日本船舶海洋工学会の論文
2001-03-12