Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Assessing Temperature and Wind Speed Dynamics by Building Cluster Type: Simulation of Cold Air Spread Along the Han River During a Heatwave in the Heukseok-dong Area of Dongjak-gu, Seoul

폭염기 한강변 저온공기의 확산에 따른 건축물 군집유형별 온도 및 풍속 변화 시뮬레이션 연구 - 서울시 동작구 흑석동 일대를 대상으로 -

  • Bae, Woong-Kyoo (Dept. of Urban Design and Studies, Chung-Ang University) ;
  • Lee, Jae-Jun (Dept. of Urban Engineering, Chung-Ang University)
  • 배웅규 (중앙대 사회기반시스템공학부 도시시스템공학전공) ;
  • 이재준 (중앙대 도시공학전공)
  • Received : 2023.09.11
  • Accepted : 2023.12.12
  • Published : 2024.01.30
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Abstract

In response to rising heat waves and the urban heat island effect, there's a need to enhance cooler air circulation from green and water spaces in urban areas. To address thermal issues, understanding the diffusion of cold air in urban water spaces and its impact on wind speed and temperature by building cluster type is crucial. This study assesses cold air diffusion in the Hangang River during a heatwave and conducts a comparative analysis of temperature and wind speed changes by building cluster type. Findings show that overpasses and apartment buildings create wind pathways, reducing water space temperatures. However, outside water spaces, temperatures rise while wind speeds decrease. This study quantifies the cooling effect up to 1,000 meters from urban water spaces, ranging from 0.05% to 1.12%. Further analysis revealed that topographic changes contribute to 84% of total temperature change, while building-related changes contribute 16%. Topographic changes tended to decrease wind speed, while building-related changes increased it. A comparative analysis of temperature and wind speed impacts along the Hangang River in urban areas shows low-rise residential areas have the highest temperatures compared to high-rise residential and commercial areas. Conversely, high-rise residential areas exhibited the highest wind speeds, followed by low-rise residential and commercial areas. This study's significance lies in using ENVI-met simulation and ArcGIS to precisely quantify cold air dispersion in urban water spaces and conduct comparative analyses of temperature and wind speed variations across different building cluster types due to cold air diffusion.

Keywords

Acknowledgement

이 논문은 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(NO.2023R1A2C1004123)

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