悬浮固粒对二维混合层流动失稳特性的影响  

Effect of Suspended Solid Particles on Unstability of Two-Dimension Mixing Layer

作　　者：周泽宣[1] 林建忠 

机构地区：[1]浙江大学力学系,流体传动与控制国家重点实验室,杭州310027

出　　处：《应用数学和力学》1997年第6期507-512,共6页Applied Mathematics and Mechanics

基　　金：浙江省自然科学基金

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。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 Rayleigh equation are obtained. And then, by solving the corresponding eigen-value equations with numerical vomputational method, the relation curves bet ween perturbation frequency and spacial growth 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.

关 键 词：稳定性 悬浮固粒 数值计算 混合层流场 失稳特性 

分 类 号：O359[理学—流体力学]