환경영향평가 (Journal of Environmental Impact Assessment)

한국환경영향평가학회 (Korean Society of Environmental Impact Assessment)
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CFD 모델을 이용한 도시 재정비 사업에 의한 NOX 분포 변화 모의

CFD Simulation of Changesin NOX Distribution according to an Urban Renewal Project

  • 김지현 (강원대학교 환경의생명융합학과) ;
  • 김연욱 (강원대학교 환경의생명융합학과) ;
  • 도현석 (강원대학교 환경학과) ;
  • 곽경환 (강원대학교 환경융합학부)
  • Kim, Ji-Hyun (Department of Environmental and Biomedical Convergence, Kangwon National University) ;
  • Kim, Yeon-Uk (Department of Environmental and Biomedical Convergence, Kangwon National University) ;
  • Do, Heon-Seok (Department of Environmental Science, Kangwon National University) ;
  • Kwak, Kyung-Hwan (School of Natural Resources and Environmental Science, Kangwon National University)
  • 투고 : 2021.01.31
  • 심사 : 2021.05.26
  • 발행 : 2021.06.30
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초록

본 연구에서는 전산유체역학(CFD) 모델을 이용한 수치 모의에서 춘천시 약사지구 도시 재정비 사업에 의한 약사천 복원과 아파트 단지 건설이 주변 지역의 오염물질 농도에 미치는 영향을 분석하였다. 사업에 의한 영향을 비교하기 위해 도시재정비 사업 전과 후인 2011년과 2017년의 지형 자료를 이용하여 바람장과 오염물질 농도장을 모의하였다. 수치 실험에서 아파트 단지 건설의 영향과 하천 복원의 효과를 구분하여 분석하도록 시나리오를 구성하였다. 대상 지역의 평균적인 배경 바람장을 반영하기 위해 춘천 종관기상관측소(ASOS)의 풍향 및 풍속 자료를 유입 경계 조건으로 사용하고, 모의 결과를 유입 풍향의 8방위별 빈도에 따라 가중평균하였다. 시나리오 간 건물·지형 변화에 따른 풍속과 NOX 농도 분포의 차이를 비교하였다. 그 결과 주변 도로에서 배출된 NOX 농도는 아파트 단지 건설에 의해 증가하였으며, 아파트 단지 건설과 하천 복원을 함께 고려한 결과에서는 증가 폭이 감소하였다. 이를 지점별로 나누어볼 때, 복원한 하천 주변으로는 NOX 농도가 감소하는 한편, 건설한 아파트 단지 주변으로는 농도가 크게 증가하였다. 아파트 단지 주변의 NOX 농도 증가는 풍향을 기준으로 아파트 단지의 후면에 위치한 곳에서 더욱 뚜렷하였으며, 그 영향은 건물 높이까지 나타났다. 이러한 결과를 통해 사업 대상 지역의 주풍향에 대한 아파트 단지 건설과 하천 복원의 상대적인 배치가 주변 대기질을 결정하는 주요 요소임을 확인하였다.

In this study, the effect of the restoration of Yaksa stream and the construction of an apartment complex by the urban renewal project in the Yaksa district of Chuncheon on air quality in the surrounding area was evaluated using computational fluid dynamics (CFD) model simulations. In orderto compare the impact of the project, wind and pollutant concentration fields were simulated using topographic data in 2011 and 2017, which stand for the periods before and after the urban renewal project, respectively. In the numerical experiments, the scenarios were set to analyze the effect of the construction of the apartment complex and the effect of stream restoration. Wind direction and wind speed data obtained from the Chuncheon Automated Synoptic Observing System (ASOS) were used as the inflow boundary conditions, and the simulation results were weighted according to the frequencies of the eight-directional inflow wind directions. The changes in wind speed and NOX concentration distribution according to the changes in building and terrain between scenarios were compared. As a result, the concentration of NOX emitted from the surrounding roads increased by the construction of the apartment complex, and the magnitude of the increase was reduced as the result of including the effect of stream restoration. The concentration of NOX decreased around the restored stream, while the concentration increased significantly around the constructed apartment complex. The increase in the concentration of NOX around the apartment complex was more pronounced in the place located in the rear of the wind direction to the apartment complex, and the effect remains up to the height of the building. In conclusion, it was confirmed that the relative arrangement of apartment complex construction and stream restoration in relation to the main wind direction of the target area was one of the major factors in determining the surrounding air quality.

키워드

과제정보

본 연구는 2020년 대학혁신지원사업 도전 연구비 지원 프로그램과 과학기술정보통신부의 재원으로 한국연구재단(NRF-2020R1C1C1012354)의 지원을 받아 수행되었습니다.

참고문헌

  1. Bady M, Kato S, Huang H. 2008. Towards the application of indoor ventilation efficiency indices to evaluate the air quality of urban areas. Building and Environment 43(12): 1991-2004. https://doi.org/10.1016/j.buildenv.2007.11.013
  2. Baik J-J, Kim J-J, Fernando H-J-S. 2003. A CFD model for simulating urban flow and dispersion. Journal of Applied Meteorology 42: 1636-1648. https://doi.org/10.1175/1520-0450(2003)042<1636:ACMFSU>2.0.CO;2
  3. Baik J-J, Kang YS, Kim J-J. 2007. Modeling reactive pollutant dispersion in an urban street canyon. Atmospheric Environment 41(5): 934-949. https://doi.org/10.1016/j.atmosenv.2006.09.018
  4. Cho KM, Koo HJ, Kim KR, Choi YJ. 2011. Wind field change simulation before and after the regional development of the Eunpyeong area at Seoul using a CFD_NIMR_SNU model. Journal of Environmental Impact Assessment 20(4): 539-555. [Korean Literature] https://doi.org/10.14249/EIA.2011.20.4.539
  5. Depayras S, Kondakova T, Heipieper HJ, Feuilloley MG, Orange N, Duclairoir-Poc C. 2018. The hidden face of nitrogen oxides species: from toxic effects to potential cure? Emerging Pollutants: Some Strategies for the Quality Preservation of Our Environment 19-42.
  6. Jung E-H, Kim D-W, Ryu J-W, Cha J-G, Son K-S. 2008. Evaluation of Spatial Characteristic of Wind Corridor Formation in Daegu Area using Satellite Data. Journal of the Korean Association of Geographic Information Studies 11(2): 73-84. [Korean Literature]
  7. Franke J, Hellsten A, Schlunzen KH, Carissimo B. 2011. The COST 732 Best Practice Guideline for CFD simulation of flows in the urban environment: a summary, Int. J. Environ. Pollut. 44: 419-427. https://doi.org/10.1504/IJEP.2011.038443
  8. Jo MH, Jo Y-W, Kim S-J. 2009. The application of ASTER TIR satellite imagery data for surface temperature change analysis - A case study of cheonggye stream restoration project. Journal of the Korean Association of Geographic Information Studies 12(1): 73-80. [Korean Literature]
  9. Joo H-S, Kim S-C, Ban J-Y, Choi S-S. 2006. Study on wind flow and air quality in urban terrain. Korea Environment Institute, pp. 1-235. [Korean Literature]
  10. Kim DJ, Wang J-W, Park S-J, Kim J-J. 2018. A study on the effects of wind fence on the dispersion of the particles emitted from the construction site using GIS and a CFD model. Korean Journal of Remote Sensing 34(5): 763-775. [Korean Literature] https://doi.org/10.7780/KJRS.2018.34.5.5
  11. Kim E-R, Lee G-J, Yi C. 2017. Dispersal of hazardous substance in a city environment based on weather conditions and its risk assessment at the pedestrian level. Journal of Environmental Impact Assessment 26(4): 242-256. [Korean Literature] https://doi.org/10.14249/eia.2017.26.4.242
  12. Kim Y-H, Baik J-J. 2005. Spatial and temporal structure of the urban heat island in Seoul. Journal of Applied Meteorology and Climatology 44: 591-605. https://doi.org/10.1175/JAM2226.1
  13. Koo HJ, Choi Y-J, Kim K-R, Byon JY. 2009. Simulation of detailed wind flow over a locally heated mountain area using a computational fluid dynamics model, CFD_NIMR_SNU - a fire case at Mt. Hwawang. Korean Journal of Agricultural and Forest Meteorology 11(4): 192-205. [Korean Literature] https://doi.org/10.5532/KJAFM.2009.11.4.192
  14. Kumar P, Ketzel M, Vardoulakis S, Pirjola L, Britter R. 2011. Dynamics and dispersion modelling of nanoparticles from road traffic in the urban atmospheric environment - A review. Journal of Aerosol Science 42: 580-603. https://doi.org/10.1016/j.jaerosci.2011.06.001
  15. Kwak K-H, Baik J-J, Ryu Y-H, Lee S-H. 2015. Urban air quality simulation in a high-rise building area using a CFD model coupled with mesoscale meteorological and chemistry-transport models. Atmospheric Environment 100: 167-177. https://doi.org/10.1016/j.atmosenv.2014.10.059
  16. Kwon AR, Kim J-J. 2014. Study on detailed air flows in urban areas using GIS data in a vector format and a CFD model. Korean Journal of Remote Sensing 30(6): 755-767. [Korean Literature] https://doi.org/10.7780/kjrs.2014.30.6.6
  17. Lin M, Hang J, Li Y, Luo Z, Sandberg M. 2014. Quantitative ventilation assessments of idealized urban canopy layers with various urban layouts and the same building packing density. Building and environment 79: 152-167. https://doi.org/10.1016/j.buildenv.2014.05.008
  18. Liu S, Pan W, Zhao X, Zhang H, Long Z, Chen Q. 2018. Influence of surrounding buildings on wind flow around a building predicted by CFD simulations. Building and Environment 140: 1-10. https://doi.org/10.1016/j.buildenv.2018.05.011
  19. Lee JH, Choi J-W, Kim J-J, Suh Y-C. 2009. The effects of an urban renewal plan on detailed air flows in an urban area. Journal of The Korean Association of Geographic Information Studies 12(2): 69-81. [Korean Literature]
  20. Lee S-H, Kwak K-H. 2020. Assessing 3-D spatial extent of near-road air pollution around a signalized intersection using drone monitoring and WRF-CFD modeling, International Journal of Environmental Research and Public Health 17: 6915. https://doi.org/10.3390/ijerph17186915
  21. Lee YS, Kim J-J. 2011. Effects of an apartment complex on flow and dispersion in an urban area. Atmosphere 21(1): 95-108. [Korean Literature] https://doi.org/10.14191/ATMOS.2011.21.1.095
  22. Mun DS, Kim J-J. 2018. A study on the flow changes around building construction area using a GIS data. Korean Journal of Remote Sensing 34(6-1): 879-891. [Korean Literature] https://doi.org/10.7780/KJRS.2018.34.6.1.4
  23. National Center for Fine Dust Information. 2017. National air pollutants emission, pp. 1-164. [Korean Literature]
  24. National Institute of Environmental Research. 2015. Air pollutant emission factor - 2012 Air pollutant emission standards, pp. 1-158. [Korean Literature]
  25. Park CY, Lee DK, Asawa T, Murakami A, Kim HG, Lee MK, Lee HS. 2019. Influence of urban form on the cooling effect of a small urban river. Landscape and Urban Planning 183: 26-35. https://doi.org/10.1016/j.landurbplan.2018.10.022
  26. Park S-J, Choi W, Kim J-J, Kim MJ, Park RJ, Han K-S, Kang G. 2016. Effects of building-roof cooling on the flow and dispersion of reactive pollutants in an idealized urban street canyon. Building and Environment 109: 175-189. https://doi.org/10.1016/j.buildenv.2016.09.011
  27. Shin M, Dong J, Ha J. 2020. A case study on the health impact assessment of residential development projects. Journal of Environmental Impact Assessment 29(5): 391-402 [Korean Literature] https://doi.org/10.14249/EIA.2020.29.5.391
  28. Yang JU. 2013. Regional regeneration through restoration of urban river. Busan Development Institute 1-16. [Korean Literature]