论文总字数：22080字

摘 要

绿色建筑的提出让人们认识到室内空气环境的重要性。而通风是改善室内空气环境的重要方法，国内外对室内通风的研究也大力开展，对同一地点不同室内格局的通风效果的研究也充分表明了通风的重要性。CFD作为计算流体力学的重要工具，本文通过简单介绍了计算流体力学软件并使用它对空调系统房间以及自然通风房间分别进行了机械通风与自然通风进行了模拟。本文选取实际生活中常见的几种模型，一个就是卧室、宾馆常见的梯形模型，一种是在学校、机关等场所常见的扇形阶梯报告厅模型，还有一个就是最普遍也利用到最多的长方体模型。但由于条件的限制，对研究对象的室内模型作了简化，所有的数据模拟均在不考虑室内实际情况而得，这些数据虽不能直接应用到实际的生活中去，但还是给我们带来一些参考的数据以及普遍的规律性。在模拟的过程中，我发现研究模型大有改进之处，所以又对实验模型提出改进的方案并又进行了模拟，模拟结果确有改进。房屋不同墙体的受热程度、门窗的布置位置，室内物品摆放位置、进出风口的布置将极大的影响室内通风的效果。

关键词：室内通风 CFD模拟 模型 开口位置

Study on the design of indoor ventilation environment

Abstract

The propose of the green building make people aware of the importance of the indoor air environment. Ventilation is an important method to improve indoor air environment, domestic and foreign research of indoor ventilation also carry out vigorously, different patterns of indoor ventilation effect of fully shows the importance of ventilation on the same place. CFD as a useful tool for computational fluid dynamics, the study briefly elucidate the computational fluid dynamics software and use it to simulate room air conditioning system as mechanical ventilation and simulate natural ventilation room as natural ventilation. This article selects several models of real life in common, one is the model which is used in bedroom and hotels, one is a fan-shaped lecture hall model which common in schools and offices, another is the most common use of cuboid model. Due to the limited conditions, the indoor model is simplified, and all the data are achieved by not considering the actual situation of indoor. These data although cannot be applied to the actual life directly, but it still give us some reference data and general law. In the process of simulation, I found that the research model need to be improved greatly, so I put forward the improved scheme of the experimental model and the results are improved. The heating degree of different walls of the house, the layout of the doors and windows, the placement of indoor items, the layout of the air inlet and outlet will greatly affect the result of indoor ventilation.

Key Words: Indoor ventilation; CFD Simulation; Model;Opening position

目 录

摘要……………………………………………………………………………………………I

ABSTRACT…………………………………………………………………………………II

第一章 绪论.…………………………………………………………………………………1

1.1 背景.…………………………………………………………………………………1

1.2 研究内容.……………………………………………………………………………2

1.3 研究进展.……………………………………………………………………………3

1.4 本章小结.……………………………………………………………………………6

第二章 CFD介绍 …………………………………………………………………………7

2.1 CFD简介……………………………………………………………………………7

2.2 CFD解决问题的方法………………………………………………………………8

2.3 本章小结.……………………………………………………………………………9

第三章 设计模拟.…………………………………………………………………………10

3.1 二维自然通风室内模拟.……………………………………………………………10

3.1.1 模拟的目的与方法……………………………………………………………10

3.1.2 简化实验房间模型……………………………………………………………10

3.1.3 边界条件的设置………………………………………………………………10

3.1.4 网格独立性验证………………………………………………………………11

3.1.5 模拟结果………………………………………………………………………11

3.1.6 实际物体的考虑及模拟………………………………………………………12

3.1.7 改进措施及模拟分析…………………………………………………………13

3.2 空调室内热环境模拟.………………………………………………………………15

3.2.1 模拟的目的与方法……………………………………………………………15

3.2.2 简化实验教室模型……………………………………………………………16

3.2.3 边界条件的设置………………………………………………………………16

3.2.4 模拟结果………………………………………………………………………17

3.2.5 闭合进出风口的对比…………………………………………………………21

3.3 自然通风室内流场模拟.……………………………………………………………23

3.3.1 模拟的目的与方法……………………………………………………………23

3.3.2 简化实验房间模型……………………………………………………………23

3.3.3 边界条件的设置………………………………………………………………23

3.3.4 模拟结果………………………………………………………………………23

3.4 本章小结.……………………………………………………………………………30

第四章 结语.………………………………………………………………………………31

参考文献……………………………………………………………………………………32

致谢.…………………………………………………………………………………………34

请支付后下载全文，论文总字数：22080字