FLUENT小球入水分析
时间:2020-12-19 15:01 来源:毕业论文 作者:毕业论文 点击:次
| 摘要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）。分析了作用在运动体上的力来确定其水中运动的阻力系数。第三章对实验设备和方法步骤进行了描述，对实验结果进行了处理。最后介绍了仿真方法和软件，将结果进行对比，验证理论的可行性。 61032 毕业论文关键词 入水弹道 阻力系数 流固耦合 数值模拟 Title Water-Entry Analysis Of Spherical Projectile 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). The effect of the forces on the moving body is analyzed to determine the resistance coefficient of water movement. Chapter III introduces equipments and process steps of the laboratory. And the experimental results were processed. Finally, simulation methods and software are described. The results are compared with the laboratory to verify the feasibility of the theory. Keywords water entry ballistic resistance coefficient couple of liquid-solid numerical simulation 目录 1绪论1 1.1课题背景及意义.1 1.2国内外研究现状.1 1.2.1国外入水问题研究现状.2 1.2.2国内研究情况.4 1.2.3未来研究方向展望.7 1.3本文主要工作...7 2入水理论分析8 2.1入水过程中流固耦合问题.8 2.2运动体的入水弹道特点...9 2.3阻力系数的理论计算10 3实验装置与实验原理.13 3.1实验装置..13 3.2发射原理..13 3.3实验中坐标系和处理方法15 3.4实验结果..15 4高速入水模拟方法与相关理论.18 4.1FLUENT软件基本简介...18 4.1.1引言18 4.1.2FLUENT软件的基本特性18 4.1.3FLUENT软件可以求解的问题19 4.1.4FLUENT定义边界条件特性..20 4.1.5FLUENT程序求解问题的步骤22 4.2小球入水模拟..24 4.2.1小球入水模型24 4.2.2划分网格25 4.2.3边界条件以及材料特性25 4.2.4计算结果26 4.2.5仿真计算结果与实验结果的对比28 结论29 致谢30
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