Simulations of pollutant dispersion at toll plazas using three-dimensional CFD models

Jie He

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Simulations of pollutant dispersion at toll plazas using three-dimensional CFD models

机译：Simulations of pollutant dispersion at toll plazas using three-dimensional CFD models

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Toll plazas are particularly susceptible to build-ups of vehicle-emitted pollutants because vehicles pass through in low gear. To look at this, three-dimensional computational fluid dynamics simulations of pollutant dispersion are used on the standard k -ε turbulence model. The effects of wind speed, wind direction and topography on pollutant dispersion were discussed. The Wuzhuang toll plaza on the Hefei-Nanjing expressway is considered, and the effects of the retaining walls along both sides of the plaza on pollutant dispersion is analysed. There are greater pollutant concentrations near the tollbooths as the angle between the direction of the wind and traffic increases implying that retaining walls impede dispersion. The slope of the walls has little influence on the variations in pollutant concentration.

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来源
《Transportation research, Part D. Transport and environment》 |2009年第8期|557-566|共10页
作者
Jie He;
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作者单位

Transportation College, Southeast University, Sipailou 2#, Nanjing City, Jiangsu Province, PR China;

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原文格式 PDF
正文语种英语
中图分类交通运输;
关键词
toll plaza; pollutant dispersion; computational fluid dynamics; numerical simulation;

Simulations of pollutant dispersion at toll plazas using three-dimensional CFD models

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