层流中固体颗粒运动方程的初值问题和稳定性分析  

THE QUESTION OF INITIAL VALUE AND THE STABILITY ANALYSIS ON THE MOVING EQUATION OF RIGID PARTICLE IN LAMINAR FLOW

作　　者：陈凌珊[1] 王仕康[2] 

机构地区：[1]广东工业大学机电系,广州510090 [2]天津大学热能所,天津300072

出　　处：《工程热物理学报》1997年第6期749-753,共5页Journal of Engineering Thermophysics

摘　　要：层流中固体颗粒运动方程的初值问题解的存在唯一性表明悬浮颗粒在圆管层流人口段剪切区中的运动，由进入该区的颗粒初始状态（初始位置和初始速度）确定，其运动轨迹也由该初始状态唯一确定。层流中固体颗粒运动方程稳定性分析表明达到稳定状态的颗粒必定满足条件：up＝uf（∞，c），up＝0，Re（α／R）2（c／R）＜2．8728．The question of initial value on the moving equation of a rigid particle in the laminar flow has indicated that the trajectories of the particle in the shear region are determined only by the initial states of the particle (the initial position and the initial velocity). The . stability analysis has revealed that the moving particle will reach a steady state finally under the conditions that up = vf(∞, c), υp = O, Re(α/R)2(c/R) < 2.8728.

关 键 词：颗粒 运动方程 初值问题 稳定性分析 层流 

分 类 号：O552[理学—热学与物质分子运动论]