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Numerical Simulation of the Spatial Migration Rule of Fugitive Dusts at Urban Building Construction Sites

Author: WenLingLi
Tutor: ZhangMingQuan
School: Lanzhou University
Course: Environmental Engineering
Keywords: Lanzhou City Dust Migration law MATLAB language Numerical Simulation
CLC: X513
Type: Master's thesis
Year: 2011
Downloads: 80
Quote: 2
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Abstract


China 's cities , especially in the northern city of atmospheric particulate matter pollution problem is very prominent , many studies have shown that urban dust is a major source of particulate matter pollution . In recent years, with the rapid development of the economy , the accelerated pace of urbanization , China is in the peak period of the construction of urban infrastructure , another city soot pollution largely been effective governance , and the wind dust season larger dust pollution of urban atmospheric pollution in urban construction sites has become increasingly prominent , but little research in our construction dust . In order to understand the impact of construction dust pollution of the ambient air quality should first understand the construction dust pollution diffusion mechanism , the trajectory of the concentration of dust particles in the spatial distribution of its particles . This paper reviewed the research and the latest progress of the domestic and foreign construction dust pollution spatial diffusion , summed up the problems and shortcomings in the current study , the combination of the open-source pollution characteristics of urban air particulate matter , launched a pilot study on the construction dust . For northern Lanzhou City the barren hills Huanggoushan land development project construction dust control problems in engineering , analysis and numerical simulation of the mathematical theory and use of space migration of construction dust diffusion law to expand the corresponding research . Force analysis of a single construction dust particles on the basis of the establishment of the equations of motion of the dust particles in the flow field , while the use of a mathematical theory to calculate the trajectory of construction dust in three-dimensional space . Euler - Lagrangian stochastic model and Monte Carlo mathematical simulation method , and by means of MATLAB software migration of construction dust space diffusion law of a numerical simulation study , intuitively , to reproduce the image of the construction dust space migration law , which not only has important guiding significance to the calculation of construction dust emissions and dust pollution control , and has high practical value of the atmospheric particulate matter pollution prevention and even urban environment air quality improved .

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CLC: > Environmental science, safety science > Environmental pollution and its prevention > Atmospheric pollution and its control > Particulate pollutants
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