高大空间建筑室内热环境特性数值分析

Numerical Analysis on Characteristics of Indoor Thermal Environment in Large Space Building

通过简化高大空间建筑边界条件,采用标准k-ε湍流模型,利用CFD方法数值分析了其室内热环境特性,并对空调气流组织进行模拟。给出了两种方案对高大空间室内热环境的影响。结果表明:(1)初始方案中高大空间建筑气流组织较差,地板温度较高。(2)优化方案中回风口设在两侧墙壁上,在送风口下方,温度场分布合理,满足热舒适要求。

Simplified the boundary conditions of large space building,standard k-ε turbulence model and CFD method were applied to analyze the characteristics of indoor thermal environment,and air distribution of air-conditioning was simulated,then the effect of indoor thermal environment in large space building with two schemes were analyzed.The results show that：（1） In scheme 1 of large space building,the wind speed nearby air return opening are larger and the temperatures around ground,walls,persons and lampshade are higher in whole space scheme of air-conditioning system.（2） The wind speed of jet axis and the recirculation zone are larger;and in the working area of air-conditioning,the temperatures are comfortable in the scheme of stratified air-conditioning system.The research conclusions show that the reasonable air distribution and thermal comfort in the working area could attained in the stratified air-conditioning system.