Grid turbulence near a moving wall
Grid turbulence near a moving wall
复制标题
移动墙附近的网格湍流
DOI：
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发表时间：
1977
影响因子：
3.7
通讯作者：
P. Hancock
中科院分区：
文献类型：
--
作者：
N. Thomas;P. Hancock
衰减网格湍流通过以流速度移动的壁。对于高雷诺数的实验，该领域由于壁约束的正常分量的速度波动被发现进一步延伸到流比粘性边界条件的影响切向分量波动。的方差，长度尺度和频谱的湍流的三个速度分量的测量进行比较与以前的实验的结果和理论预测的理想化的流动。提出了一个简单的模型，从理论上的一些偏离。
Decaying grid turbulence was passed over a wall moving at the stream speed. For the high Reynolds number of the experiment, the field due to the wall constraint on the normal component of the velocity fluctuations is found to extend further into the flow than the influence of the viscous boundary condition on the tangential-component fluctuations. Measurements of the variances, length scales and spectra of the three velocity components of the turbulence are compared with the results of a previous experiment and with the theoretical predictions for an idealization of the flow. A simple model for some departures from the theory is proposed.