非周期的造波問題の周波数領域での取扱い (第4報) : 非線型特性を持つ二次元係留浮体の波浪中運動

抄録

As a practical method to simulate the motion of a two-dimensional body with non-linear type mooring system in waves, the equation of motion described in frequency domain (F.D. method) is used. However this method is not exact since the frequency of motion can not be determined, a priori, when non-linear term is involved in the equation. In this paper, numerical simulation by using the equation of motion determined in time domain (T.D. method) is presented, and the results of simulation are compared with those of F.D. method and experimentl results. It is shown that the prediction by T.D. method show a more satisfactory coincidence with the measured values than those by F.D. method.