空调房间空气流场分布的数值模拟

Numerical Simulation of Airflow Distribution in Air-conditioned Room

本文根据《采暖通风与空气调节设计规范》建立了空调房间的物理模型,确定了模型的相关热工参数。针对影响室内气流分布的诸多因素,选择性地分析了送回风口位置对室内气流分布的影响。本文采用CFD软件Airpak模拟了空调房间同侧上送下回、对侧上送下回、同侧下送上回、对侧下送上回四种典型送回风方式,得出室内温度场、速度场、空气龄和人体热舒适性等参数分布图,并根据ISO7730标准分析了四种送回风方式下的室内空气环境。经综合分析,同侧上送下回的送风方式为最佳气流组织方案。本研究对空调房间气流组织设计具有理论指导意义和实用价值。

Based on Design Specification of Heating, Ventilating ＆ Air Conditioning, this article establi-shes physical models of air - conditioned room, then determines the parameters of heat engineering. Ai ming at the factors that affect indoor air distribution, this article analyses the influence of different posi tion of air - supply outlet and air - return vent. It uses CFD software Airpak to simulate four typical air - supply and return styles （top supplying and same down exhausting, top supplying and opposite down - exhausting, down - supplying and same top - exhausting, down - supplying and opposite top - ex hausting）, then gets the distribution maps of indoor temperature field, velocity field, air age, human＇s thermal comfort and other parameters. Based on ISO7730, the indoor air environment of the four different air - supply and return styles are analysed. Through comprehensive analysis, top - supplying and same down - exhausting is the best scheme of airflow organization. This study has theoretical and utilizable val- ue for the design of airflow in air - conditioned room.