海洋资源四维勘探拖缆阵列动力学特性仿真研究  

Simulation study on dynamic characteristics of towed array for four-dimensional exploration of marine resources

作　　者：吴喆莹[1] 张维竞[1] 刘涛[1] 张广磊[1] 史斌杰[1] 

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200240

出　　处：《海洋工程》2012年第4期118-124,共7页The Ocean Engineering

基　　金：国家自然科学基金资助项目(51079083)

摘　　要：面对日益增长的海洋资源勘探需求,海洋资源四维勘探拖缆阵列的研究越来越被人们所重视。作为拖缆动态控制策略研究的前提与依据,拖缆阵列的动力学特性始终是该领域在技术突破进程中的重要课题。以Ablow的经典模型为基础,采用微元法对拖缆阵列建立三维模型,并在时域上采用广义α算法对非线性方程进行离散求解,通过程序编译,对拖缆在四种工况(即拖船匀速直线航行、回转航行、变速直线航行以及拖点处存在升沉运动等)下的响应进行计算分析,着重考量其深度及张力的变化。仿真计算结果表明,广义α算法对拖缆阵列姿态在空间和时间上离散求解,算法稳定性良好,弥补了传统有限差分法对于时域不稳定的缺陷。In the face of the growing demand of marine resources exploration,studies are increasingly concentrated on towed array for four-dimensional exploration of marine resources.As the premise and basis of further study on dynamic control strategy of towed array,dynamic characteristics of towed array are always the crucial task of technology development in this field.Based on the classic Ablow model,a three-dimensional model is established by applying micro-element method to towed array in this paper and a generalized-α algorithm is introduced to temporally discrete and solve the nonlinear equations.By programming,the computation analysis of response of towed cable,especially the variation in depth and tension,under four different motions,such as steady straight motion,circular manoeuver motion,speed changing motion and heaving motion,is made,which provide an important basis for the following research in making dynamic control strategy of towed array.

关 键 词：海洋勘探 拖缆阵列 广义α算法 动力学特性 仿真 

分 类 号：P741[天文地球—海洋科学]