An Investigation of the Application of Taylor's Hypothesis to Atmospheric Boundary Layer Turbulence.
An Investigation of the Application of Taylor's Hypothesis to Atmospheric Boundary Layer Turbulence.
复制标题
泰勒假设在大气边界层湍流中的应用研究。
DOI：
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发表时间：
1974
期刊：
影响因子：
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通讯作者：
C. Elderkin
中科院分区：
文献类型：
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作者：
D. Powell;C. Elderkin
摘要 当平均风向基本沿塔线时，通过对从气象塔线获取的数据进行相关分析和相谱分析，研究了泰勒假设在15、30和58 m高度大气边界层湍流中的应用。不同顺风位置测量的平行分量最大互相关的时滞表明，涡流结构的移动速度略快于同一高度的纵向风的平均值。正如 Talyor 假设所预测的，空间滞后高达 252 m，纵向和垂直分量的空间和时间自相关函数表现出良好的一致性。当滞后≥32 m 时，横向分量的一致性较差。根据 Lin 的说法，泰勒的假设在边界层剪切流中对于那些波数 κ 成立，使得 κŪ≫dŪ/dz。不同顺风位置的平行风分量数据的相谱分析显示泰勒假设...
Abstract The application of Taylor's hypothesis to atmospheric boundary layer turbulence at heights of 15, 30 and 58 m has been investigated by correlation analysis and phase-spectral analysis of data taken from lines of meteorological towers when the mean wind direction was essentially along the tower line. The time lag of maximum cross correlation between parallel components measured at different alongwind locations indicates that the eddy structure travels slightly faster than the mean value of the longitudinal wind at the same height. The autocorrelation functions in space and in time for the longitudinal and vertical components show good agreement, as predicted by Talyor's hypothesis, for space lags up to 252 m. The agreement for the lateral component is inferior for lags ≥32 m. According to Lin, Taylor's hypothesis holds in boundary layer shear flow for those wavenumbers κ such that κŪ≫dŪ/dz. Phase spectral analysis of parallel wind component data at different alongwind locations shows Taylor's hypo...