波浪中を航走する船の非線形変動圧力の推定

概要

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The non-linear unsteady pressure acting on the hull surface of the ship advancing in waves is numerically investigated by using a time-domain computation method. In this study, A Green function method which satisfying the linearized free-surface condition is adopted as the time-domain computation method and is applied to so-called the body non-linear problem which can capture the change of hull form below the calm water due to the ship motion. Computations are carried out for the modified Wigley models which have different flare shapes at bow and stern and the unsteady pressure distributions on the hull surface are also simulated. Through the comparisons with the results of Rankine Panel Method which satisfying the linearized free-surface condition, it is shown that the non-linear effects on the unsteady pressure are remarkably observed at the bow near the resonance point.
社団法人日本船舶海洋工学会の論文
2004-03-20