도시 · 건축적 특성에 따른 미세먼지 분포패턴 분석

Abstract

Purpose: This study aimed to examine how particulate matter is distributed according to physical characteristics such as land use, street pattern, open space, and the layout, height and form of buildings in urban space, and to suggest ways to reduce it. Method: The recently constructed new town was selected as the target area, and five districts with different characteristics of 500m×500m were extracted, and CFD simulations were conducted to analyze the micro-climate characteristics and the distribution characteristics of particulate matter in each district. Result: The wind direction of the site was affected by the layout and orientation of the buildings, and the section where particulate matter was stagnant was found. For example, the concentration of particulate matter was higher in commercial areas with low-rise and high-density characteristics compared to residential areas, whereas it was lower in areas with low building coverage ratio and regular layout of buildings, ensuring proper spacing between buildings. In addition, green area and river played a role in lowering the concentration of particulate matter by spreading particulate matter, but some areas around them stagnated particulate matter. Therefore, through this study, the relationship between urban spatial and architectural characteristics and particulate matter distribution patterns can be examined. Also, it is significant in that it can give implications for effective location setting when installing particulate matter reduction facilities such as trees, green areas, and cooling mist.