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首页> 外文期刊>European Journal of Mechanics, B. Fluids >DCIV measurements of flow fields and turbulence in waves breaking over a bar
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DCIV measurements of flow fields and turbulence in waves breaking over a bar

机译：DCIV测量流过条形波的流场和湍流

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摘要

The experimental investigation of laboratory waves breaking over a bottom topography resembling a bar is presented in this paper. The experiments were conducted in a glass flume. The instantaneous velocity fields were measured using a video based digital correlation image velocimetry (DCIV). Measurements of velocities were restricted to positions shorewards of the bar crest. Measurements of time averaged velocities, turbulence intensities and turbulent kinetic energies that span the entire water column are provided. As the plunging-like wave at the crest of the bar turns into a spilling-like wave with increasing depth on-shore of the bar, it is shown that a limited transfer of TKE down to the bed is observed compared to spilling breakers on uniform slopes.
机译：本文介绍了实验室波突破类似于棒的底部地形的实验研究。实验在玻璃水槽中进行。使用基于视频的数字相关图像测速仪（DCIV）测量瞬时速度场。速度的测量仅限于钢筋顶向岸的位置。提供了跨越整个水柱的时间平均速度，湍流强度和湍动能的测量。随着棒顶部的突入式波变成棒状岸上深度增加的溢流式波，表明与均匀地溢流式破碎机相比，观察到的TKE向下传播到床的过程有限。连续下坡。

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