This paper investigates the impacts of heating intensity and inflow wind speed on the characteristics of
reactive pollutant dispersion in street canyons using the computational fluid dynamic (CFD) model that includes
the transportation of NO, NO2, and O3 coupled with NO-NO2-O3 photochemistry. The results indicated that
the heat intensity and inflow wind speed have a significant influence on the flow field, temperature field and the
characteristics of reactive pollutant dispersion in and above the street canyon. With the street canyon bottom
heating intensity increasing, NO, NO2 and O3 concentrations in street canyon are decreased. The O3 concentration
reductions are even more than the NO and NO2 concentrations. Improving the inflow wind speed can significantly
reduce the NO and NO2 concentrations within street canyons. But the O3 concentrations have a slight rise with
wind speed increasing. The results would be useful for understanding the interrelation among reactive vehicle
emissions, and provide references for urban planners.
XIE Xiaomin (谢晓敏), ZHU Zhongwei (朱中伟)
. Effects of Heat Intensity and Inflow Wind on the Reactive Pollution Dispersion in Urban Street Canyon[J]. Journal of Shanghai Jiaotong University(Science), 2018
, 23(Sup. 1)
: 109
-116
.
DOI: 10.1007/s12204-018-2030-x
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