scholarly journals Simulation of air pollution dispersion in Dhaka city street canyon

AIP Advances ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 065022
Author(s):  
Most. Nasrin Akhter ◽  
Md. Eabad Ali ◽  
Mohammad Matiur Rahman ◽  
Md. Nur Hossain ◽  
Md. Mamun Molla
Keyword(s):  
Air Pollution ◽  
Street Canyon ◽  
Dhaka City ◽  
Pollution Dispersion ◽  
City Street ◽  
Air Pollution Dispersion

scholarly journals Modeling and simulation of air pollutant distribution in street canyon area with Skytrain stations

2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Suranath Chomcheon ◽  
Nathnarong Khajohnsaksumeth ◽  
Benchawan Wiwatanapataphee ◽  
Xiangyu Ge
Keyword(s):  
Air Pollution ◽  
Street Canyon ◽  
Air Flow ◽  
Air Pollutant ◽  
Navier Stokes ◽  
Pollution Dispersion ◽  
Convection Diffusion ◽  
Air Pollution Dispersion ◽  
Compressible Turbulent Flow ◽  
The Impact

Abstract This paper focuses on effects of the wind flow velocity on the air flow and the air pollution dispersion in a street canyon with Skytrain. The governing equations of air pollutants and air flow in this study area are the convection–diffusion equations of species concentration and the Reynolds-averaged Navier–Stokes (RANS) equations of compressible turbulent flow, respectively. Finite element method is utilized for the solution of the problem. To investigate the impact of the air flow on the pattern of air pollution dispersion, three speeds of inlet wind in three different blowing directions are chosen. The results illustrate that our model can depict the airflows and dispersion patterns for different wind conditions.

Case Study of Nanjing Inner Ring on Air Pollution Dispersion from Roadway Tunnel Portals

2012 ◽  
Vol 610-613 ◽  
pp. 1895-1900 ◽  
Author(s):  
Shu Jiang Miao ◽  
Da Fang Fu
Keyword(s):  
Air Pollution ◽  
Pollutant Dispersion ◽  
Air Pollutant ◽  
Urban Traffic ◽  
Lagrangian Model ◽  
Pollution Dispersion ◽  
Piecewise Function ◽  
Air Pollutant Dispersion ◽  
Air Pollution Dispersion

The tunnel module of a rather simple Lagrangian model GRAL (Grazer Langrange model) has been chosen to study air pollutant dispersion around tunnel portals in Nanjing inner ring. Two points have been made to popularize GRAL3.5TM (the tunnel module of a Lagrangian model GRAL; the update was in May 2003) and assure it more suitable for the actual situations in Nanjing. One is to derive a piecewise function of the intermediate parameter ‘stiffness’. Another is to take Romberg NOx-NO2 scheme into account. After these 2 works on GRAL3.5TM, NO2 dispersion from portals of all the 6 tunnels in Nanjing inner ring has been simulated. The importance of limiting urban traffic volume to control air quality around tunnel portals and roadways has been emphasized.

Air Pollution Dispersion Modelling in Surrounding of Industrial Zone of City Pancevo

2004 ◽  
pp. 127-134
Author(s):  
Zoran Grsic ◽  
Predrag Milutinovic ◽  
Milena Jovasevic-Stojanovic ◽  
Dragan Dramlic ◽  
Marko Popovic
Keyword(s):  
Air Pollution ◽  
Dispersion Modelling ◽  
Industrial Zone ◽  
Pollution Dispersion ◽  
Air Pollution Dispersion ◽  
Pollution Dispersion Modelling

scholarly journals Virtual Assessment of air Pollution Dispersion from Anthropogenic Sudden Explosion

2016 ◽  
Vol 12 (2) ◽  
pp. 94-101 ◽  
Author(s):  
Marvel Lola Akinyemi ◽  
Moses Eterigho Emetere ◽  
Mojisola Rachel Usikalu
Keyword(s):  
Air Pollution ◽  
Pollution Dispersion ◽  
Air Pollution Dispersion
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