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针对一典型办公建筑,在层式通风方式下,采用Navier-Stokes方程和RNG的k-ε涡粘性湍流模型,对不同送、回风口布置下的办公室气流组织进行流体力学仿真研究,对比分析其人员呼吸区的空气品质和房间的排污效率(CRE)。结果表明,对于采用层式通风方式的典型办公建筑,送风口设置在Δh=20cm处能使呼吸区获得更好的空气品质,同时CRE值也最低;并且在此送风方式下,采用上部回风时呼吸区空气品质更优,而在房间的排污效率方面,异侧回风较同侧回风效果更佳。
For a typical office building, under the layer ventilation mode, the Navier-Stokes equations and the k-ε eddy viscosity turbulence model of RNG are used to simulate the airflow in offices with different sending and returning tuyeres. Air quality in the breathing area of the staff and room drain efficiency (CRE). The results show that for the typical office building with layer ventilation, the air outlet can be set at Δh = 20cm to get better air quality in the breathing zone and the lowest CRE value. In this mode, the upper part Breathing area when the air quality of the air better, and in the room of the sewage efficiency, the same side return air return air effect is better.