双层幕墙冬季内循环送风的CFD气流及热工模拟

Airflows and Thermal CFD Simulation of Internal Recycling Double Skin Facades in Winter

本文借助功能强大的CFD通用软件FLUENT,对广东省中医院的双层玻璃幕墙在冬季内循环运行的情况下进行了热工模拟,得到自然热气流及增强热气流两种工况下双层玻璃幕墙热通道内的速度场和温度场。在此基础上,得到出风口的空气流量、平均温度、平均风速等物理量,进而求出通风增热效率h及K值,最后对双层幕墙的冬季增热综合性能进行评估。

This paper uses the commercial CFD code FLUENT to simulate the airflows in double skin facades that located in Guangdong Provincial Hospital of Traditional Chinese Medicine. In winter conditions,the airflow is taken into the room and the corresponding flow and temperature field is calculated,which are based on the case of natural convection and forced convection respectively. The volumetric flow rate, the mean air temperature and velocity are also obtained and find the η and K of thermal efficiency. These parameters are used to obtain the energy performance of the facades.