置换通风数值模拟分析与技术经济性研究

【作者】 刘庆红；

【导师】 周建伟；

【作者基本信息】 南京理工大学 ， 流体力学， 2004， 硕士

【摘要】 本论文主要由两部分组成，一部分是应用计算流体力学的理论与方法模拟置换通风房间空气的流动情况并进行分析。研究在对流作用下，室内气流的流动结构、速度、温度和污染物浓度分布以及换热规津，将数值模拟的结果可视化，分析讨论置换通风气流分布的规律、特点及其适用场合。模拟结果证实置换通风确实是很好的房间空调系统设计方案，提高室内空气品质，能使工作人员始终处于新鲜的呼吸带。 另一部分是对置换通风进行技术经济性研究。对置换通风和传统上送风这两种通风方式进行技术经济性比较，以模糊数学作为计算比较工具。在对数学模型、评判目标、权重、隶属度等相关内容进行理论分析的基础上，用Matlab计算矩阵方程，得出优选方案目标。分析结果证明了置换通风在技术经济上比传统上送风优越，具有节能效果。更多还原

【Abstract】 This paper is mainly made up of two parts. One is to apply Computational Fluid Dynamics in turbulent flow of displacement ventilation room. Study the air-flow structure, velocity field, temperature field, the degree of contamination and the law of heat exchange on the condition of convection. Then the results of numerical simulation are visualized, the law and character of airflow distribution and the application of displacement ventilation are discussed. At the same time, the results of simulation proved that displacement ventilation is truly good designing project of airflow in conditioning room, can improve the quality of air in room, and can make personnel live in fresh air.The other is to study technique economic of displacement ventilation. In case of the same hardware of office building, compare technique economic of displacement ventilation to technique economic of traditional ventilation up, dark mathematics is calculation tool. Make theoretical analysis on mathematical model, objects judged, weigh, the degree belonging to and so on, and calculate matrix equations with the software of Matlab. The results studied show that displacement ventilation is superior to traditional ventilation up in technique economic, displacement ventilation not only gives us fine air-flow in room, but also saves energy.更多还原