FREE-STREAM TURBULENCE NEAR PLANE BOUNDARIES
FREE-STREAM TURBULENCE NEAR PLANE BOUNDARIES
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DOI：
10.1017/s0022112078000130
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发表时间：
1978-01-01
影响因子：
3.7
通讯作者：
GRAHAM, JMR
中科院分区：
文献类型：
--
作者：
HUNT, JCR;GRAHAM, JMR
本文用边界层理论和谱方法分析了自由流通过以与自由流相同速度运动的刚性表面时产生的网格湍流对流。假设湍流较弱，即分别为流向坐标、运动粘度和平均速度。在这里，湍流速度在表面衰减到零。计算了谱方差和互相关，发现与Uzkan & Reynolds（1967）和托马斯&汉考克（1977）对运动壁附近湍流的测量结果比较好，表明该理论的结果有许多应用，包括预测风洞壁附近和平行于流动放置的平板附近的湍流。
Grid turbulence convected by a free stream past a rigid surface moving at the same speed as the free stream is analysed by boundary-layer theory and spectral methods. The turbulence is assumed to be weak, i.e. are the streamwise co-ordinate, kinematic viscosity and mean velocity respectively. Here the turbulent velocity decays to zero at the surface. Spectra variances and cross-correlations are calculated and found to compare well with measurements of turbulence near moving walls by Uzkan & Reynolds (1967) and Thomas & Hancock (1977).The results of this theory are shown to have a number of applications including the prediction of turbulence near wind-tunnel walls and near flat plates placed parallel to the flow.