基于CFD技术的大空间建筑气流组织分析

Analysis on Airflow Organization of Large Space Building with the CFD Technology

为分析大空间建筑的气流组织，建立高宽比为1．2的二维物理模型，利用CFD技术对该类建筑的气流组织进行数值模拟，通过改变送回风口的位置和送风风速进行对比分析，总结各种送回风方式的优缺点；对传统通风方式进行改进，认为该类建筑应该采用多送多回的方式进行通风，送风口有较小高差且送风风速有所差异时工作区气流组织更好。

In order to analysis air organization of large space building, set up a 2D physical model with a ratio of 1.2（high to width）, and used CFD （computational fluid dynamics） software simulate the building airflow organization. By changing the position and speed of air inlet and outlet for contrast analysis, summarized the advantages and disadvantages of various supply and return air way. To improve the traditional ventilation mode, the building should use the way of multiple supply and retum air way. When the distance of two air inlets is shorter in vertical direction and air speed is different, the air distribution will be better.