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http://dx.doi.org/10.5467/JKESS.2017.38.7.522

The Verification of a Numerical Simulation of Urban area Flow and Thermal Environment Using Computational Fluid Dynamics Model  

Kim, Do-Hyoung (Applied Meteorology Research Division, National Institute of Meteorological Sciences)
Kim, Geun-Hoi (Applied Meteorology Research Division, National Institute of Meteorological Sciences)
Byon, Jae-Young (Applied Meteorology Research Division, National Institute of Meteorological Sciences)
Kim, Baek-Jo (Applied Meteorology Research Division, National Institute of Meteorological Sciences)
Kim, Jae-Jin (Department of Environmental Atmospheric Sciences, Pukyong National University)
Publication Information
Journal of the Korean earth science society / v.38, no.7, 2017 , pp. 522-534 More about this Journal
Abstract
The purpose of this study is to verify urban flow and thermal environment by using the simulated Computational Fluid Dynamics (CFD) model in the area of Gangnam Seonjeongneung, and then to compare the CFD model simulation results with that of Seonjeongneung-monitoring networks observation data. The CFD model is developed through the collaborative research project between National Institute of Meteorological Sciences and Seoul National University (CFD_NIMR_SNU). The CFD_NIMR_SNU model is simulated using Korea Meteorological Administration (KMA) Local Data Assimilation Prediction System (LDAPS) wind and potential temperature as initial and boundary conditions from August 4-6, 2015, and that is improved to consider vegetation effect and surface temperature. It is noticed that the Root Mean Square Error (RMSE) of wind speed decreases from 1.06 to $0.62m\;s^{-1}$ by vegetation effect over the Seonjeongneung area. Although the wind speed is overestimated, RMSE of wind speed decreased in the CFD_NIMR_SNU than LDAPS. The temperature forecast tends to underestimate in the LDAPS, while it is improved by CFD_NIMR_SNU. This study shows that the CFD model can provide detailed and accurate thermal and urban area flow information over the complex urban region. It will contribute to analyze urban environment and planning.
Keywords
Computational Fluid Dynamics (CFD) Model; CFD_NIMR_SNU; urban area flow; surface temperature;
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Times Cited By KSCI : 8  (Citation Analysis)
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