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http://dx.doi.org/10.5392/JKCA.2020.20.03.001

Application of Ventilation Corridor to Mitigate Particulate Matter for the Sejong-Si  

Nam, Seongwoo (국토연구원 국가균형발전지원센터)
Sung, Sunyong (국토연구원 국토환경.자원연구본부)
Park, Jong-Soon (국토연구원 국토환경.자원연구본부)
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Abstract
The purpose of this study is to verify the effects of ventilation corridor and derive adequate policy alternatives to its application for the city of Sejong, which is located in an inland of Korean Peninsula. In order to introduce the ventilation corridor in the city, it is necessary both to understand change on fresh air flow affected by the construction of new cities and to show its effects which are able to circulate air flow of the city. The study identified ventilation effects using computational fluid dynamics models. In particular, it analyzed change on wind speed and direction after constructing of a new town and cool air flow along the lowlands generated after sunset. In addition, it identified those of reducing particulate matter when arranging buildings conforming to the ventilation corridor at block level. The policy implications derived from simulation can be summarized as follows. First, it is desirable to plan ventilation corridors so that fresh air from mountains, forests, and valleys can flow into cities and mitigate the concentration of particulate matter. Furthermore, public facilities covering parks, plazas, and playgrounds should be installed preferentially to attract safe outdoor activities near to areas with low levels of particulate matter. Finally, it is adequate to prepare for a number of alternative plans by analyzing ventilation corridors when setting out district unit plan.
Keywords
Particulate Matter; Mitigation and Diffusion; Ventilation Corridor; Sejong-Si; Computational Fluid Dynamics Model;
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