| Title |
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 |
| Authors |
배웅규(Bae, Woong-Kyoo) ; 이재준(Lee, Jae-Jun) |
| DOI |
https://doi.org/10.5659/JAIK.2024.40.1.157 |
| Keywords |
Hangang River; Cold Air; Cooling Effect; Building cluster type; CFD simulation |
| 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. |