Abhijith K V, Gokhale Sharad
Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.
Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.
Environ Pollut. 2015 Sep;204:99-108. doi: 10.1016/j.envpol.2015.04.013. Epub 2015 Apr 29.
This study investigates the passive-control-potentials of trees and on-street parked cars on pedestrian exposure to air pollutants in a street canyon using three-dimensional CFD. Since, according to some studies trees deteriorate air quality and cars parked roadside improve it, the combine as well as separate effects of trees and on-street parked cars have been examined. For this, different tree canopy layouts and parking configurations have been developed and pedestrian exposure for each has been analysed. The results showed, for example, tree crown with high porosity and low-stand density in combination with parallel or perpendicular car parking reduced the pedestrian exposure considerably.
本研究使用三维计算流体动力学（CFD）研究了街道峡谷中树木和路边停放车辆对行人暴露于空气污染物的被动控制潜力。由于一些研究表明树木会恶化空气质量，而路边停放的汽车会改善空气质量，因此研究了树木和路边停放车辆的综合以及单独影响。为此，制定了不同的树冠布局和停车配置，并分析了每种情况下的行人暴露情况。例如，结果表明，高孔隙率和低林分密度的树冠与平行或垂直停车相结合，可显著降低行人暴露水平。
