统一理论计算船舶水动力的实用性研究  

Practicability of unified theory in calculating ship hydrodynamics

作　　者：王正锐 朱仁传[1,2] 徐德康 李超凡 WANG Zhengrui;ZHU Renchuan;XU Dekang;LI Chaofan(School of Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240 [2]上海交通大学海洋工程全国重点实验室,上海200240

出　　处：《中国舰船研究》2024年第4期210-218,共9页Chinese Journal of Ship Research

基　　金：“叶企孙”科学基金重点支持项目(U2141228)。

摘　　要：[目的]针对切片理论计算细长船舶水动力时存在的低频限制问题,使用一种简易的方法高效计算更广频率范围内的细长船舶水动力。[方法]基于综合了切片理论和普通细长体理论的统一理论,编程计算椭球、修改的Wigley船模和S60船的附加质量与阻尼系数,并与实验值、切片理论、三维移动脉动源格林函数法等的计算结果进行对比,分析统一理论的计算特点及优势。[结果]结果显示,基于二维剖面的统一理论在零航速工况下的计算结果与三维面元法的计算结果基本一致,在有航速工况下的计算结果与三维移动脉动源格林函数法的计算值展现出相近的变化规律。[结论]研究表明统一理论能够反映低频区域的三维效应,相比三维方法更高效、更简易,有较高的实用价值。[Objectives]This study seeks to address the low-frequency limitations in the computation of hydrodynamics for slender ships using strip theory,and develops an efficient method for calculating hydrodynamics over a wider frequency range for slender ships using a simplified approach.[Methods]Based on the unified theory of strip theory and ordinary slender body theory,the added mass and damping coefficients of a prolate spheroid,slender,modified Wigley model and S60 ship are calculated programmatically.A comparison is made between the calculated results using the unified theory and experimental data,as well as results obtained from strip theory,3D translating and pulsating source Green's function method and other methods.The computational characteristics and advantages of the unified theory are then analyzed.[Results]The results indicate that the unified theory based on 2D sections produces results under zerospeed conditions that are consistent with those obtained by the 3D panel method.For conditions involving ship speed,the calculated results exhibit consistent variations with those obtained from the 3D translating and pulsating source Green's function method.[Conclusions]The proposed unified theory is capable of reflecting 3D effects in the low-frequency region,which gives it greater efficiency and simplicity compared to 3D methods,and thus significant practical value.

关 键 词：统一理论 切片理论 三维效应 船舶水动力 

分 类 号：U661.32[交通运输工程—船舶及航道工程]