(1)Research and analysis of the relevant information collected, summed up the analysis of various types processes of the water flooding into the damaged hull of research methods.In this paper, we will use numerical simulation by PLIC-VOF method to study the present situation.
( 2 ) This paper analyzes the different locations, sizes and draft positions of bottom damaged ship, and the change of the volume fraction of the oxygen in the tank with time and the influent rate.
(3 ) This paper summarizes the influencing factors and characteristics of the bottom of the tank during the infiltration process. Through this data can make people more aware of the damage to the bottom of the ship after the situation within the cabin.
Keywords: bottom damage; numerical simulation; damaged model; fluent simulation; flow characteristics
目录
第一章绪论 1
1.1概述 1
1.2国内外研究的现状及存在的问题 2
1.3本文的主要工作内容 5
第二章破舱进水过程数值理论及方法 7
2.1数学模型 7
2.1.1控制方程 7
2.1.2初始条件 8
2.1.3边界条件 8
2.2数值模型 9
2.2.1Fluent软件的简介 9
2.2.2湍流模型 10
2.3数值算法 10
2.3.1 SIMPLE算法 10
2.3.2 VOF(TheVolumeofFluid)方法 11
2.3.3控制方程的离散化 12
2.4本章小结 13
第三章船舱底部进水过程数值模拟 14
3.1引言 14
3.2计算模型及网格划分 14
3.2.1实验装置介绍 14
3.2.2网格划分 15
3.3模拟舱室进水过程分析 16
3.3.1船体舱室进水过程的初始状态分析 16
3.3.2船体舱室进水过程的中间阶段分析 17
3.3.3船体舱室进水过程的后期阶段分析 19
3.3.4破损舱室内水的体积分数变化 20
3.3.5破损舱室进水的速度变化 21
3.4本章小结 22
第四章船舱底部破损进水过程特性分析 23
4.1引言 23
4.2破口大小对舱室进水的影响 23
4.2.1计算模型 23
4.2.2计算工况 23
4.2.3计算结果对比与分析