Numerical Simulation Study On The Influence Of High-rise Buildings On Air Pollutant Dispersion

Industrial parks are often planned to be built on the edge of the city,locating in the direction of the prevailing wind direction.With the growth of urban population and the acceleration of urbanization process,the demand for housing is also increasing,the residential projects are transferred to the urban fringe area,and the old shanty towns are rebuilt and transformed into high-rise buildings.The traditional simulation method of the industrial park may leak the harmful substance diffusion model with the Gauss model,but if the lower wind direction exists in the high-rise building group,the influence range of the harmful substance diffusion of the Gauss model will be distorted,and it has a negative effect on the accident rescue and emergency decision.This paper is based on the simulation background of the building of a shanty town before and after the annual leading wind direction of an industrial park in Chongqing.Based on the computational fluid dynamics model,this paper carries out the simulation of harmful substances diffusion in the general layout villages and the high-rise enclosure layout groups.The following research is mainly carried out.1.In order to solve the problem of Gauss model simulation result affected by high-rise buildings,numerical simulation is used to analyze the dispersion of air pollutants from industrial parks.2.The perennial dominant wind direction of Industrial Park simulates the diffusion of air pollutants in general flat villages.Compared with the simulated shanty towns,which the influence of high-rise buildings on air pollutant dispersion.3.The diffusion and concentration distributions of pollutants in the industrial parks under different wind speeds are analyzed.4.The dispersion of pollutants in the industrial parks under different height levels is analyzed.Through the high-rise buildings enclosing wind environment and pollutant diffusion research,summed up the Industrial Park perennial dominant wind direction downwind group construction project of high-rise building on the diffusion of atmospheric pollutants were investigated,the results of the City Industrial Park area design and atmospheric pollutants diffusion simulation provides the analysis reference.