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摘要
A method in which the complex flow near and through the openings of a porous wind barrier is treated at a detailed level. The flow characteristics of the turbulent wake behind the barrier are experimentally and numerically investigated. The wind barrier is accurately geometrically represented with a three-dimensional model in the numerical simulation. Barrier models consisting of horizontal bars with different inclination angles are considered. The unsteady Reynolds-averaged Navier-Stokes (URANS) computation is applied because the flow is not statistically stationary. The shear stress transport (SST) k-omega turbulence model is used because it shows good behavior in adverse and separated flows. In addition to the three-dimensional URANS numerical study, an experimental study is performed to confirm the numerical data. The aim is to conduct an experimental and numerical study of a fluid flow through the geometrically accurate three-dimensional barrier model and analyze the bar inclination effect on the wake characteristics behind the barrier. As the bar inclination angle decreases, the bleed flow gets stronger, which results in a smaller reduction of the mean streamwise velocity. In addition, the turbulence intensity decreases in the shelter wake with a decreasing bar inclination angle.
- 出版日期2014-1
