Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Development of Empirical Model for the Air Pollutant Dispersion in Urban Street Canyons Using Wind Tunnel Test

풍동실험을 이용한 도시거리협곡에서의 대기오염확산모델의 개발

  • Park, Seong-Kyu (Department of Environmental Engineering, University of Seoul) ;
  • Kim, Shin-Do (Department of Environmental Engineering, University of Seoul) ;
  • Lee, Hee-Kwan (Department of Civil and Environmental Engineering, University of Incheon)
  • 박성규 (서울시립대학교 환경공학과) ;
  • 김신도 (서울시립대학교 환경공학과) ;
  • 이희관 (인천대학교 토목환경시스템공학과)
  • Published : 2005.08.31
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Abstract

Modeling techniques for air quality are useful tools in air quality management. Especially, the air quality in urban area is significantly influenced by local surroundings such as buildings and traffic. When considering the air quality in a street canyon, which is usually filmed by a series of consecutive buildings and a street, currently available air dispersion model have a number of limitations to predict the air quality properly. In this study, it is aimed to propose an empirical model for the air quality in urban street canyons. A series of wind tunnel tests, followed by statistical analysis, were conducted. In conclusion, it is found that a wide street canyon and a perpendicular external wind to the street canyon are beneficial to achieve an enhanced air quality in street canyon environment. The model prediction using the proposed model also shows reliable correlations to the wind tunnel test results.

대기질 예측 모델링은 대기질 관리의 유용한 도구이다. 특히, 도시지역에서 대기질은 건물과 자동차와 같은 국부적인 장애물에 의해 크게 영향을 받는다. 일반적으로 도로를 따라 건물이 연속적으로 형성되어있는 도시거리협곡에서의 대기질을 예측하고자 할 때 현재 이용 가능한 대기확산모델은 대기질을 정확하게 예측하는데 많은 한계점을 가지고 있다. 본 연구에서는 도시거리협곡에서 대기질 예측을 위한 경험적인 모델을 제안하고자 하였다. 이를 위해 풍동실험을 수행하고, 그 결과를 통계적으로 분석하였다. 풍동실험 결과 넓은 협곡인 경우와 도로축과 직각을 이루는 바람일 때 도시거리협곡의 대기질을 향상시키는데 유용하다는 것을 확인하였다. 또한, 제안한 모델을 이용한 모델 예측치는 풍동실험 결과와 상관성이 양호하게 나타났다.

Keywords

References

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