摘 要自19世纪末,船舶空调系统已经成为了船舶设备中不可或缺的一个组成部分。空调系统在有室外空气通过的时候将会进行一系列的处理,处理完成后输送至室内,以此来保证室内空气环境的健康、舒适,满足人体健康生活所需的要求,同时保证船上各项设备正常工作。因此,在设计者在设计方案来改进船舶空调系统以及优化系统的运行方案时必须要将舱室的特点充分考虑进去。船舶空调热舒适性的研究标准是船上人员是否感觉到舒适,在满足室内热舒适性标准的情况下,通过空调系统对空气的处理来创造出一个良好的室内空气环境,能够提高船员的工作效率。进入到21世纪,世界上的造船业已经全面进入了“数字化”的时代,用数字化软件建立用来模拟舱室内部空气环境的模型,并根据软件显示的结果来分析该舱室内部的速度场和温度场的分布情况,用来保证该舱室大部分区域速度场和温度场分布较均匀。86824
毕业论文关键词:计算流体力学,气流组织;数字化建模仿真
Abstract Since the end of the 19th century, Marine air conditioning system has become an indispensable part of Marine equipment。When the air outside through the machine,for ensuring a healthy and comfortable indoor air environment,the air conditoning system will take a series of processing and then delivery to indoor to meet the requirements of human's healthy life and guarantee to ship the equipment of work normally。As a result,the designer must take the characteristics of cabin into consideration when they design the scheme to improve the ship air conditioning systems and optimize operation system。 The standard of air conditioning thermal comfort of the ship is whether the crew feel comfortable or not。In the case of meet the standard of indoor thermal comfort,we can improve the efficiency of its crew by creating a good indoor air environment with the processing of the air conditioning system。Into the 21st century, the world shipbuilding industry has entered the era of 'digital' in an all-round way。We can build a model to simulagte the air environment inside the cabin with the help of digital software,and then analyze the cabin inner distribution of temperature field and velocity field according to what the software showing,thus,to ensure distribution of the velocity field and the temperature filed of the most area in cabin is homogeneous。
Key words:Computational fluid dynamics,Digital modeling and simulation,Air distribution
目录
第一章 绪论 1
1。1 课题研究的背景和意义 1
1。2。1 流体力学计算法(CFD)简介 2
1。2。2 国外应用研究的现状 3
1。2。3 国内应用研究现状 4
1。3 本论文研究的主要内容和方法 5
1。4 本章小结 6
第二章 气流组织 7
2。1 气流组织的任务 7
2。2 气流组织的形式 7
2。3 气流组织的评价标准 9
2。3。1 送风有效性指标 10
2。3。2 污染物排除有效性指标 11
2。3。3 热舒适性指标 11
2。3。4 能量利用系数指标