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

Ryusuke Yasuda; Takeyuki Miyajima; Atsumasa Yoshida

doi:10.1504/IJEP.2011.038415

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

Ryusuke Yasuda^*, Takeyuki Miyajima, Atsumasa Yoshida

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	164-172
Number of pages	9
Journal	International Journal of Environment and Pollution
Volume	44
Issue number	1-4
DOIs	https://doi.org/10.1504/IJEP.2011.038415
Publication status	Published - 2011 Feb
Externally published	Yes

Keywords

Air pollution
Large eddy simulation
LES
Roadside environment
Sliding mesh method
Vehicle induced turbulence
Vertical plume width

ASJC Scopus subject areas

Waste Management and Disposal
Pollution
Management, Monitoring, Policy and Law

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10.1504/IJEP.2011.038415

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title = "Numerical simulation of turbulent dispersion on a two-way facing traffic road",

abstract = "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.",

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author = "Ryusuke Yasuda and Takeyuki Miyajima and Atsumasa Yoshida",

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doi = "10.1504/IJEP.2011.038415",

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T1 - Numerical simulation of turbulent dispersion on a two-way facing traffic road

AU - Yasuda, Ryusuke

AU - Miyajima, Takeyuki

AU - Yoshida, Atsumasa

PY - 2011/2

Y1 - 2011/2

N2 - 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.

AB - 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.

KW - Air pollution

KW - Large eddy simulation

KW - LES

KW - Roadside environment

KW - Sliding mesh method

KW - Vehicle induced turbulence

KW - Vertical plume width

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DO - 10.1504/IJEP.2011.038415

M3 - Article

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JO - International Journal of Environment and Pollution

JF - International Journal of Environment and Pollution

IS - 1-4

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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