机动车单车扬尘浓度分布规律的模拟

Numerical simulation about concentration distribution of raising dust caused by a travling vehicle

为了掌握汽车扬尘中PM10污染分布特征,采用数值模拟的方法对汽车扬尘PM10浓度分布规律及其影响因素进行了研究,分析了车速、积尘负荷对汽车扬尘PM10浓度的影响。结果表明,车速与扬尘运移速率成正比,且车速在20～60 km/h范围内与扬尘高度近似成线性分布;积尘负荷与汽车扬尘PM10平均浓度同比例变化。

For gripping the distribution of the dust pollution by the car,the numerical simulation method was utilized to study the distribution of the dust concentration by the car and its influencing factors,and the influence of car speed and dust loading to the PM10 dust concentration was analyzed.The results show that the vehicle speed is proportional to the dust migration rate and linear to the dust height distribution in the 20～60 km/h range.Meanwhile,the dust loading is proportional to PM10 dust average concentration.