Numerical simulation of turbulent dispersion on a two-way facing traffic road

被引：2
|
作者：
Yasuda, Ryusuke [1 ]
Miyajima, Takeyuki [1 ]
Yoshida, Atsumasa [1 ]
机构：
[1] Osaka Prefecture Univ, Dept Mech Engn, Naka Ku, Osaka 5998531, Japan
来源：
INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION | 2011年 / 44卷 / 1-4期
基金：
日本学术振兴会;
关键词：
roadside environment; air pollution; LES; large eddy simulation; vehicle induced turbulence; sliding mesh method; vertical plume width; VEHICLE-INDUCED TURBULENCE;
D O I：
10.1504/IJEP.2011.038415
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A Large Eddy Simulation (LES) model was developed to investigate vehicle-induced turbulence and its effect on turbulent dispersion. The instantaneous behaviour of vehicle exhausts and the time-space averaged distributions of flow and concentration statistics on the roadway were estimated. The patterns of mean flow are significantly different between the one-way and the two-way traffic cases. In the vehicle passing area, the standard deviations of the spanwise and the vertical fluctuation velocities are two times larger than the maximum of the mean velocity. The relationship between the growth rate of vertical plume width and the background cross flow was also investigated.
引用
收藏
页码：164 / 172
页数：9
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