悬浮固粒对二维混合层流动失稳特性的影响<sup>*</sup>

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悬浮固粒对二维混合层流动失稳特性的影响^*

基金项目: * 浙江省自然科学基金

Department of Mechanics, State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, 310027, P. R. China

摘要: 本文在不可压缩二维混合层流动方程的基础之上,通过添加固粒的作用项,推导得到了修正的瑞利方程；然后用数值计算方法解其特征方程,得到了悬浮固粒的质量密度、固粒和气流的速度比值以及Stokes数不同时二维混合层流动中扰动频率与空间增长率的关系曲线,给出了关于悬浮固粒对流场失稳特性影响的几个重要结论。
- 二维混合层 /
- 稳定性 /
- 悬浮固粒 /
- 数值计算
Abstract: By considering the effect of suspended solid particles in the ordinary equations for two-dimension inviscid incompressible mixing layer, the Rayleigh equation and the modified R ayleigh equation are obtained.And then, by solving the corresponding eigen-value equations with nu merical vo mputational method, the relation curves between perturbation frequency and spacial gro wth rate of the mixing layer for the varying particle loading, ratio of particle velocity to fluid velocity and Stokes number are got .Several important conclusions on the effect of suspended solid particles on unstability of the mixing layer are presented in the end by analyzing all the relation curves.
- two-dimension mixing layer /
- unstalility /
- suspended solid particles /
- numerical computation

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