基于ENVI-met模式的某高校教学区室外微气候模拟与分析

Simulation and analysis on outdoor microclimate in teaching area of an university based on ENVI-met model

基于三维非静力气候模拟软件ENVI-met,以大庆市某高校教学区为研究对象建立模拟方案,运用实测与模拟相结合的方法对校园微气候进行研究。得出了ENVI-met模型的模拟结果变化趋势与实际环境中的气象变化趋势基本一致,能够较好地反映出实际情况;针对实际区域内模拟结果的温度场、风环境及相对湿度进行了相关分析,并与相同模型、相同参数下无植被方案的模拟结果进行对比分析,得出了建筑物与树木阴影的有效结合可降低教学区内人行高度处的环境温度;教学区内部道路可作为通风廊道,降低空气龄,加速污染物的流通;教学区内大量植物的自身蒸腾作用为周围大气提供了大量的水蒸气,使局部空气保持湿润、相对湿度较高等结论。

Based on the three-dimensional non-static climate simulation software ENVI-met, this paper sets up a simulation scheme for the research object of an university teaching area in Daqing, and uses the method of measurement and simulation to study the campus microclimate. The following conclusions are drawn: the variation trend of the ENVI-met model is basically consistent with the climate change trend in the actual environment, which can better reflect the actual situation. Secondly, the temperature field, the wind environment and the relative humidity in the actual area are analyzed, and the same model is the same as the same model. The simulation results of the non vegetation scheme under the parameters are compared and analyzed. The effective combination of the shadow of the building and the trees can reduce the ambient temperature in the teaching area. The internal road in the teaching area can be used as a ventilation corridor, reducing the age of the air, accelerating the circulation of the pollutants, and the transpiration of a large number of plants in the campus. It provides plenty of water vapor for the surrounding atmosphere, keeping local air moist and relatively high humidity.