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Korean Meteorological Society (한국기상학회)
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Assessment of Observation Environment for Surface Wind in Urban Areas Using a CFD model

CFD 모델을 이용한 도시지역 지상바람 관측환경 평가

  • Yang, Ho-Jin (Korea Polar Research Institute, KIOST) ;
  • Kim, Jae-Jin (Department of Environmental Atmospheric Sciences, Pukyong National University)
  • 양호진 (한국해양과학기술원 부설 극지연구소) ;
  • 김재진 (부경대학교 환경대기과학과)
  • Received : 2015.03.10
  • Accepted : 2015.06.02
  • Published : 2015.09.30
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Abstract

Effects of buildings and topography on observation environment of surface wind in central regions of urban areas are investigated using a computational fluid dynamics (CFD) model. In order to reflect the characteristics of buildings and topography in urban areas, geographic information system (GIS) data are used to construct surface boundary input data. For each observation station, 16 cases with different inflow directions are considered to evaluate effects of buildings and topography on wind speed and direction around the observation station. The results show that flow patterns are very complicated due to the buildings and topography. The simulated wind speed and direction at the location of each observation station are compared with those of inflow. As a whole, wind speed at observation stations decreases due to the drag effect of buildings. The decrease rate of wind speed is strongly related with total volume of buildings which are located in the upwind direction. It is concluded that the CFD model is a very useful tool to evaluate location of observation station suitability. And it is expected to help produce wind observation data that represent local scale excluding the effects of buildings and topography in urban areas.

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References

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