大空间建筑及其相似放大建筑的室内热环境模拟分析  

Numerical Simulation for Analyzing Thermal Environment of a Large-scale Building and Its Similar Construction

作　　者：胡宇[1] 黄晨[1] 蔡宁[2] 

机构地区：[1]上海理工大学,上海200093 [2]南京工程学院,江苏南京211167

出　　处：《流体机械》2012年第9期67-71,42,共6页Fluid Machinery

基　　金：上海市教委重点学科建设项目资助(J50502)

摘　　要：以某大空间热环境试验基地为分析对象,运用试验测试和数值模拟的方法,设置大空间原型数值计算条件并分析喷嘴送风工况下的室内热环境;在此基础上建立了4倍于原试验建筑几何尺寸的大空间模型,并应用相似理论,给出了适合于该放大空间建筑数值计算的边界条件。数值计算和实测结果表明,标准k-ε模型可以用于描述该大空间建筑的湍流特性;室内典型位置处温度的实验测试结果与原型及放大模型的数值计算结果基本吻合,平均相误差均小于5%。可以认为,本文建立的大空间热环境相似关系可以为数值模型实验提供适当的边界条件,为数值计算在大空间热环境的拓展研究提供思路。The indoor thermal environment of a large-scale building was analyzed through CFD and experiments under the con- dition of stratified airflow caused by spherical vents. Besides, another simulation of its similar building which dimensions are 4 times larger would be handled based on similarity method to get a suitable setting method. It showed standard k-εmodel eould be used for this and the results between simulations and experiments are acceptable with relative error less than 5% （vertical tem- perature distribution of room center, plane temperature distribution of 1.7m high）. This study is of reference significance to the application of similarity method on CFD and to simulations of large seale buildings.

关 键 词：大空间建筑 数值模拟 室内热环境 相似理论 

分 类 号：TB6[一般工业技术—制冷工程]