不同绿化形式对临街居住区PM_(10)扩散的影响

The Effect of Different Greening Patterns on PM_(10) Diffusion in the Roadside Resident District

采用CFD模拟方法研究临街居住区PM10的扩散规律,利用现场测试数据对模型进行了验证。在此基础上,研究了不同绿化形式对PM10扩散规律的影响。结果表明,绿化树木可以降低居住区的PM10浓度,单排乔木与单排灌木使居住区PM10平均浓度分别减少了15.1%和17.1%;单排灌木对PM10的阻滞效果优于单排乔木,PM10平均净化百分率增加3.31%。

The PM10 diffusion features in the roadside resident district was carried out using CFD numerical simulation,and the model was validated with measured data.On the basis of this,the effect of different greening patterns on PM10 diffusion was studied.The results showed that residential greening would lead to the decease of PM10 concentration,single row trees cause a 15.1 decrease,shrub cause a 17.1 decrease.The dust blocking effect of shrub was superior to trees,PM10 removal percentage was increased 3.31％.