摘要本毕业设计首先概述了课题的研究背景,介绍了国内外对入水问题的研究现状。然后对运动体入水中的现象进行了分析,描述了流固耦合空化现象,运动体的入水弹道特点(包括包含水面撞击和侵水、流动分离形成入水空泡、带空泡航行和溃灭四个阶段)。第三章构建了入水弹道运动学方程组及动力学方程组。最后介绍了仿真中用到的模拟方法及相关理论,并对运动体高速入水进行了仿真分析,得到了仿真结果与试验结果基本一致的结论。关键词 入水弹道 空泡 流固耦合 理论分析8219
毕业设计说明书(论文)外文摘要Title analysis of water-entry movement
Abstract
Firstly this paper describes the research background and introduces the present situation of the researches into the water problems at both home and abroad. And then the fluid-structure interaction phenomenon is analyzed, which helps us describe the capitation of the fluid-structure interaction phenomenon and the ballistic characteristics of the body moving into the water (including four stages:the bump of water and invasion of water, flow separation forming water vacuoles,navigation with vacuoles and collapse). Chapter III constructs the water trajectory kinematics equations and dynamical equations. Finally, the paper discusses the simulation method used in the simulation and related theories, and makes simulation on high-speed moving body such as water .The results reach the same conclusion with the experiment.
Keywords: water entry ballistic air cavity couple of liquid –solid
theoretical analysis
目 录