低矮群房室外风环境和自然通风数值模拟与分析

Numerical simulation and analysis of outdoor wind environment and natural ventilation of low building groups

为了准确有效地研究低矮群房室外风环境和室内自然通风潜力大小,本文探讨了模拟工具的选择,物理和数学模型的建立,计算区域的确定以及边界条件的设置等,同时结合风环境的评价方法,模拟分析了某联合厂房周围风环境以及室内自然通风的潜力。结果表明:无论哪种季节,厂房周围风速适宜人员活动,除涡流区外空气品质良好。夏季可以有效地利用自然通风,以降低室内冷负荷。

In order to research outdoor wind environment and indoor natural ventilation potential of low building groups reliably and effectively, this paper discusses how to choose the simulation tool, to establish the physical and mathematical model, to set the calculation area and the boundary conditions. Combining with the evaluation method of the wind environment, this paper simulates and analyzes wind environment and the potential of indoor natural ventilation of a joint factory. The results show that： no matter what kind of season, wind velocity around the factory is suitable to personnel activities, air quality is good except the vortex area. It is good to use natural ventilation in summer witch can decrease indoor clod load.