SHIP WAVES IN SHALLOW WATER THEIR PROPAGATION AND TRANSFORMATION
作者单位：Faculty of EngineeringSaitama University255Shimo-okuboSaitama338-8570Japan Professor Graduate School of EngineeringUniversity of Tokyo3-8-1KomabaMeguro-kuTokyo153-8902Japan Graduate Student Graduate School of EngineeringUniversity of Tokyo3-8-1KomabaMeguro-kuTokyo153-8902Japan Graduate Student Graduate School of Science and EngineeringSaitama University255Shimo-okuboSaitama338-8570Japan Graduate Student
会议名称：《亚太海岸工程会议》
会议日期：2001年
学科分类：08[工学] 0824[工学-船舶与海洋工程] 082401[工学-船舶与海洋结构物设计制造]
摘 要：正Ship waves in shallow water are greatly different from those in deep water. In the present paper, the numerical method of ship waves by Tanimoto et al. was applied to open sea with a constant water depth and a coast with straight, parallel depth contours in order to investigate characteristics of propagation and transformation of ship waves. The ship length is 82m, the breadth is 14.6m and the draft is 5.88m. The ship sails on a straight course of a constant water depth from 6.5m to 18m. The wave pattern changes by the depth Froude number as pointed out by Havelock. When the ship speed is critical or super-critical, bow waves ahead of the ship are split to several isolated waves as they propagate. Transformations due to shoaling and refraction occur when ship waves propagate on the sloping coast. When the ship sails on the straight course of 15m deep and the speed is critical, the maximum wave height exceeds to 2m at the water depth of 1.5m.