On the turbulent flow over a wavy boundary
On the turbulent flow over a wavy boundary
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关于波状边界上的湍流
DOI：
10.1017/s002211207000157x
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发表时间：
1970
影响因子：
3.7
通讯作者：
R. Davis
中科院分区：
文献类型：
--
作者：
R. Davis
本文研究了无限小振幅行波湍流流动的两个假设。最初由Miles提出的一个假设是，波浪不影响湍流，因此湍流雷诺应力仅取决于平均波面以上的高度。另外，湍流应力主要取决于瞬时波表面以上的高度的建议进行检查。适当的方程的数值解进行了比较与斯图尔特最近的实验结果，并与近似的解决方案所采用的迈尔斯和其他。与实验结果比较，不能得出明确的结论，因为预测的流动是相当敏感的细节，平均速度分布附近的波表面，没有采取数据。结果发现，渐近结果不适用于调查的条件。
Two hypotheses concerning the turbulent flow over an infinitesimal-amplitude travelling wave are investigated. One hypothesis, originally made by Miles, is that the wave does not affect the turbulence and therefore the turbulent Reynolds stresses are dependent only on height above the mean wave surface. Alternatively, the proposal that turbulent stresses are primarily dependent on height above the instantaneous wave surface is examined. Numerical solutions of the appropriate equations are compared with Stewart's recent experimental results and with the approximate solutions employed by Miles and others. No definite conclusion can be reached from comparison with experimental results since the predicted flows are quite sensitive to details of the mean velocity profile near the wave surface where no data was taken. It is found that the asymptotic results do not apply for the conditions investigated.