Effects of urban redevelopment on wind corridor and thermal environment in urban area

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Monday, 3 February 2014
Hall C3 (The Georgia World Congress Center )
Hojin Yang, National Institute of Meteorological Research, Seoul, South Korea; and C. Yi, H. G. Kwon, Y. H. Kim, and H. S. Jung

Before and after the urban redevelopment, the effects of buildings on wind corridor and heating/cooling effects by land surface type on thermal environment are investigated using computational fluid dynamics (CFD) model. Sewoon commercial street in Seoul was set as a target areas. For more realistic representation of land surface characteristic, digital surface model (DSM) data and digital terrain model (DTM) data are used as an input data for CFD. Eight inflow directions are considered to investigate the change of flow pattern, wind speed according to reconstruction and change of thermal environment by connecting green area formation. Also, meteorology and atmospheric photochemistry mesoscale model (METPHOMOD) in climate analysis seoul (CAS) data are used to consider realistic weather condition. The result show that wind corridors are changed due to reconstruction. As a whole surface temperature around target area decreases due to connecting green area formation. It is concluded that the CFD model coupled with CAS is possible to evaluate the wind corridor and heat environment before/after reconstruction and connecting green area formation. Also, CFD model is a very useful tool to urban planning and green area planning.