浅吃水肥大双尾船型水动力系数的一种计算方法

The Calculation Method on Hydrodynamic Coefficients of Shallow Draft Plump Vessel with Double-Stern

根据高梨、伊三夫提出的浅吃水肥大型船横摇实用计算方法,采用流域分割理论,推出一种适合双尾浅吃水肥大型船的水动力系数实用计算方法。本文方法弥补了多极展开法、普通切片法之不足,并与Frank法比较,输入数据的准备工作简单,易于上机实现,所用的C.P.U时间短,而精度良好,便于对船舶耐波性的初步设计。是一种较为实用的计算方法。本文还对高梨、伊三夫的横摇实用计算方法,进行摄动分析,导出该方法的物形影响高阶项,在理论上给予说明。

According to Isao practical calculition method on rowing the vessel, this paper presents the new method of hydrodynamic coefficients for shallow draft plump vessel with double-stern based on the segmented fluid theory.The method makes up the defects of the ordinary strip method and others.Comparing with Frank′s method, the preparation for input data is simple,and the results from both are approximate. It not only can be easily opera-ted in computer by the method, but also takes shorter C.P.U time than that of Frank′s method. The method is convenient for the elementary designof seakeeping. The author believes that it is a practical calculation method.Further more, the paper has deduced the high revising order of bodyshapeaffection and has succeeced in giving explanation in theory with aid of per-turbation analysis to Isao method.