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CFD技术及其商业软件的发展使人们可以用数值模拟的方法预测地铁车站内环境,评价通风效果,改进通风排烟系统的设计,在提供舒适环境的同时,进一步降低能耗。为了对数值计算结果进行检验,对某地铁车站模型内的气流组织进行了实验测定,并采用商业软件Fluent对地铁车站模型内的速度场进行了数值模拟。在数值计算中采用κ-ε方程作为紊流模型,以现场实测数据作为边界条件,计算结果与实测数据吻合较好。结果表明,采用商业软件对地铁车站内气流组织的数值模拟可以获得较准确的车站内流场的详细数据,从而可以对整个通风排烟系统进行全面评价。
With the development of CFD technology and its commercial software, people can predict the environment inside metro station by numerical simulation, evaluate the ventilation effect, improve the design of ventilation and smoke exhaust system, and provide more comfortable environment and further reduce energy consumption. In order to test the numerical results, the air flow in a metro station model was experimentally measured. The commercial software Fluent was used to simulate the velocity field in the metro station model. The κ-ε equation is used as the turbulence model in the numerical calculation and the field data is used as the boundary condition. The calculated results are in good agreement with the measured data. The results show that using commercial software to simulate the airflow in metro station can obtain more accurate data of the flow field in the station, so that the whole ventilation and smoke exhaust system can be fully evaluated.