Theoretical model of particle orientation distribution function in a cylindrical particle suspension subject to turbulent shear flow

被引：0
|
作者：
ZHANG Lingxin1
2. Institute of Marine and Coastal Sciences
机构：
来源：
Progress in Natural Science | 2006年 / 01期
基金：
中国国家自然科学基金;
关键词：
dispersion; cylindrical particle suspensions; turbulent flow; probability function;
D O I：
暂无
中图分类号：
O357 [粘性流体力学];
学科分类号：
摘要：
The equation for the orientation probability function of slender cylindrical particles suspended in planar turbulent flows was investigated. After ensemble averaging, the equations for the mean and fluctuating probability function were derived. The equation for the fluctuating probability function appearing in the equation of mean probability function was solved by using the method of characteristics analysis. The orientational dispersion terms due to the random motion of cylindrical particles in the equation of mean probability function are related to the mean probability function and the Lagrangian fluid velocity correlations. The evolution of the mean probability function was described by a modified oriental ion-space-convection equation, where the dispersion terms account for the randomizing effect of the turbulence.
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页码：16 / 20
页数：5
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