混合对流作用下小室流场和温度场的数值模拟  

Numerical simulation on the mixed convection in a cavity

作　　者：时真男[1] 付慧琴 胡正鹏[3] 王建强[1] 

机构地区：[1]河北工程学院城市建设学院,邯郸056038 [2]张家口市城乡建设研究院,张家口075000 [3]湖北省人民医院,武汉430000

出　　处：《河北建筑科技学院学报》2004年第3期1-4,共4页Journal of Hebei Institute of Architectural Science & Technology

基　　金：河北省自然科学基金项目(502388);河北省教育厅研究计划项目(2003246)

摘　　要：建筑空调为人们提供清洁舒适的室内环境。本文在Ｂｌａｙ等人实验研究基础之上 ,采用标准关键词模型和壁面函数法 ,对具有混合对流作用的小室流场和温度场进行数值模拟 ,经与实验值对比发现 ,标准κ-ε模型可以较为准确模拟混合对流作用的流动与传热问题 ,速度值的最大偏差为 0 . 0 43ｍ ｓ,温度最大偏差值为 1 . 1Ｋ ;A comfortable and healthy indoor environment should be provided by the air-condition in a good building. On the basis of the experimental work finished by Blay et al., the standard model and wall-function are used to simulate the mixed convection flow in a two-dimensional cavity, and the numerical results of flow and temperature field match with the measured data well. The maximum error between the numerical and the experimental data is about (0.043m/s) in velocity and 1.17K in temperature. In addition, the buoyancy can be neglected for source term of equation.

关 键 词：标准κ-ε模型 壁面函数法 混合对流 数值模拟 

分 类 号：TU834[建筑科学—供热、供燃气、通风及空调工程]