Zheng Maohui,Jin Min,and Han Xin.Simulation on human exposure caused by dangerous gas dispersion in urban areas[J].Journal of Shenzhen University Science and Engineering,2013,30(No.3(221-330)):287-293.[doi:10.3724/SP.J.1249.2013.03287]





Simulation on human exposure caused by dangerous gas dispersion in urban areas
郑茂辉 金敏 韩新
同济大学上海防灾救灾研究所,上海 200092
Zheng Maohui Jin Min and Han Xin
Shanghai Institute of Disaster Prevention and Relief, Tongji University, Shanghai 200092, P.R.China
air pollution urban environmental safety dangerous gas human exposure numerical simulation time-varying concentration fluid mechanics geographic information system (GIS) building
X 820.4
An integrated approach incorporating computational fluid dynamics (CFD) model, exposure model, and geographic information system (GIS) is presented to predict the transfer and dispersion of dangerous gas, and estimate the exposed population in urban areas. A tracer gas experiment carried out in center London is simulated and analyzed. The results show that, given appropriate parameters, the CFD method coupled with a model of exposure is capable of predicting the time-varying concentrations and exposure levels around the complex arrangement of buildings, and the potentially affected population can also be roughly estimated using GIS and building database. The buildings and roads have important influence on the trajectory of the gas cloud near ground level. Significant amounts of cloud mass may stay longer in some building wakes or narrow street sections, which constitutes a threat to public health and safety.


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Foundation:National Natural Science Foundation of China (41001217);National Key Technology R&D Program in the 12th Five Year Plan of China (2012BAJ11B01)
Corresponding author:Associate professor Han Xin. E-mail: hanxin@tongji.edu.cn
Citation:Zheng Maohui, Jin Min, Han Xin. Simulation on human exposure caused by dangerous gas dispersion in urban areas[J]. Journal of Shenzhen University Science and Engineering, 2013, 30(3): 287-293.(in Chinese)
作者简介:郑茂辉(1976-),男(汉族),福建省漳州市人,同济大学讲师、博士. E-mail: zmh@tongji.edu.cn
引文:郑茂辉, 金敏, 韩新. 城市地区危险气体扩散与人口暴露模拟[J]. 深圳大学学报理工版,2013,30(3):287-293.
更新日期/Last Update: 2013-05-19