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首页> 外文期刊>Experiments in Fluids: Experimental Methods and Their Applications to Fluid Flow >Near wall characterization of the flow over a two-dimensional steep smooth hill
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Near wall characterization of the flow over a two-dimensional steep smooth hill

机译:二维陡峭光滑山丘上流的近壁表征

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摘要

Near-wall data for the strongly perturbed flow in a neutrally stable boundary layer encountering a steep, smooth, two-dimensional hill are presented. Observations were made on the centerplane of a water channel at thirteen stations relative to the hill by laser Doppler anemometry. The large reverse flow region that is formed on the lee of the hill was particularly scrutinized through seven measuring stations. Results are presented for the mean and turbulent properties of the flow. Wall shear stress was evaluated through fitting procedures that resorted to the near wall behavior of the velocity profile. Logarithmic fits as well as predictions through the Reynolds stress profiles are also presented.
机译:给出了遇到陡峭,光滑,二维丘陵的中性稳定边界层中强烈扰动流的近壁数据。通过激光多普勒风速仪在相对于山丘的十三个站点的水道中心平面上进行了观测。通过七个测量站对形成在山坡上的大型逆流区域进行了详细检查。给出了流动平均值和湍流特性的结果。墙剪应力通过拟合程序评估,该程序采用速度分布图的近壁行为。还提供了对数拟合以及通过雷诺应力曲线的预测。

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