Influence of Gas Turbulence on the Instability of an Air-Water Mixing Layer.
Influence of Gas Turbulence on the Instability of an Air-Water Mixing Layer.
复制标题
气体湍流对空气-水混合层不稳定性的影响。
DOI：
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发表时间：
2015
影响因子：
8.6
通讯作者：
A. Cartellier
中科院分区：
文献类型：
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作者：
Jean;S. Marty;Mohamed Seydou Dem;A. Cartellier
我们提出的第一个证据的直接影响的气体湍流的平面空气-水混合层的剪切不稳定性。我们用两个不同的实验表明，增加气相中的速度波动的水平不断增加的不稳定性的频率，最大的湍流强度调查的频率的两倍。一个修改后的时空稳定性分析，考虑到湍流通过一个简单的雷诺应力封闭提供了正确的趋势和幅度的这种影响。
We present the first evidence of the direct influence of gas turbulence on the shear instability of a planar air-water mixing layer. We show with two different experiments that increasing the level of velocity fluctuations in the gas phase continuously increases the frequency of the instability, up to a doubling of frequency for the largest turbulence intensity investigated. A modified spatiotemporal stability analysis taking turbulence into account via a simple Reynolds stress closure provides the right trend and magnitude for this effect.