分层流体中潜体内波尾迹形态的初步分析  

Analysis of submarine-induced internal wave wakes in a stratified fluid

作　　者：项伟征[1] 沈国光[1] 

机构地区：[1]天津大学建筑工程学院船舶系,天津300072

出　　处：《船舶力学》2005年第4期18-24,共7页Journal of Ship Mechanics

摘　　要：本文综合利用内波垂向结构的Sturm-Liouville方程解、内波射线理论和稳定相原理及渐进分析方法,构造出了潜艇尾迹的空间形态。结果表明,内波尾迹的平面形状在短波极限情况是有尖点的人字形波系;在长波极限情况则为钝头的波系。对三层结构,其垂向的尾迹传播路径为在内波波导区域内的折线,而对Holmboe分布模式则形如一条“摆龙”。By using of solution of Sturm-Liouville equation of vertical structure of internal wave,ray theory,principle of stationary phase and asymptotic analysis method synthetically,the space configuration of submarine internal wave wake is constructed in this paper.The results show that the horizontal shape of internal wave wake is a A-shape wave system for short limit and blunt wave system for long wave limit respectively.The vertical path of wake propagation is broken line for three layer modes and “swayed dragon： for Holmboe modes distribution respectively in region of internal wave guide.

关 键 词：内波尾迹 分层流体 稳定相原理 渐近分析 

分 类 号：O353.2[理学—流体力学]