| Title |
A Study on Inlet Flow Profile in CFD Simulation for Predicting Wind Environment in Urban Area |
| Authors |
Hong, In-Pyo ; Ki, Hyun-Seung ; Jung, Eun-Young ; Song, Doo-Sam |
| Keywords |
Field Measurement ; CFD(Computational Fluid Dynamics) ; Wind Profile Power Law ; Exponent α |
| Abstract |
Recently, drastic urbanization is making building forest in urban area. This phenomenon cause various problems such as Heat Island, pollutant stagnation and gust. Especially, deformed wind by buildings makes severe problems in wind environment. To solve this problem, wind tunnel test and CFD(Computational Fluid Dynamics) simulation are used. CFD simulation methods are widely used because of its convenience for time and cost. To properly predict the wind environment in urban area with CFD, the boundary condition for simulation should be set in correct. Especially, the inlet wind profile has a great influence on the results. The aims of this paper is to discuss the influence of inlet wind profile on wind environment of multi-residential building block in urban area. The field measurement and CFD simulation were accomplished and the results were analyzed in this paper. Even though the value of 0.33 for exponent(α) is often used in wind profile in urban area, an exponent 0.22, 0.15 is more appropriate from the results of this study. |