摘要
对街道峡谷污染问题的研究常采用实地测量、物理风洞试验和数值模拟等方法。本文采用数值模拟对城市街道峡谷汽车污染物的扩散规律进行了研究,从描述街道峡谷内空气流动和污染物扩散的控制方程出发,采用数值模拟的方法对街道内部的空气流动和污染物的扩散进行了模拟分析,并将结果与风洞试验结果进行比较,从而获得了城市街道峡谷汽车污染物的扩散规律。研究结果可以为城市街道大气污染监测、评价以及防治提供科学依据。
The study of pollution in street canyons often based on field measurements, physical wind tunnel testing and numerical simulation methods. In this paper, numerical simulation of the urban street canyons Diffusion of motor vehicle pollutants have been studied from the description of the street canyon air flow and pollutant dispersion equations, adopting the method of numerical simulation of air flow within the streets and motor vehicle diffusion of pollutants discharged the simulation analysis, and the results were compared with wind tunnel test results, to obtain a motor vehicle pollutants in urban street canyons proliferation laws. The results for the urban street air pollution monitoring, evaluation and control to provide a scientific basis.
出处
《建筑热能通风空调》
2012年第3期73-76,共4页
Building Energy & Environment
关键词
街道峡谷
汽车污染物
对流扩散
数值模拟
street canyon, car pollutant, convection and dispersion, numerical simulation
