重力场及微重力场下Marangoni对流的实验测定与数值模拟  

Experimental measurement and numerical computation of temperature-gradientdriven marangoni convection under normal and microgravity conditions

作　　者：洪若瑜[1] 王廖沙[1] 陈莉莉[1] M.Kawaji 丁建敏 

机构地区：[1]苏州大学化学化工学院有机合成江苏省重点实验室 [2]Department of Chemical Engineering and Applied Chemistry University of Toronto,Toronto,ON M5S 3E5,Canada [3]IBM HYDA/050-3 C202,3605 Highway 52 North,Rochester,MN 55901 USA

出　　处：《计算机与应用化学》2006年第5期385-390,共6页Computers and Applied Chemistry

基　　金：国家自然科学基金(NNSFC;20476065;20171034);中科院多相反应重点实验室基金(200312);中科院煤转化国家重点实验室基金(2004-309);江苏省有机合成重点实验室基金;国家教委留学回国基金;苏州大学211工程基金的资助.

摘　　要：研究了在重力场及微重力场下,由温度梯度引起的Marangoni对流。实验在NASA的KC-135飞机中进行,通过飞机作俯冲飞行而产生微重力场。应用激光辐照激发染料变色技术,使流体流动可视化。研究了在不同粘度的硅油与水的液-液相界面上的流体流动,借助于二维正交曲线坐标中的Navier-Stokes方程进行数值模拟,并对比了计算与实验结果。The Marangoni convection driven by temperature gradient were studied both under normal and microgravity conditions. Experiments were conducted both on the ground and aboard the NASA＇s KC-135 parabolic flight aircraft. Photochromic Dye Activation （PDA） technique was used to visualize the fluid movement. The effect on the fluid movement at the liquid-liquid interface of silicon oils with different viscosities was studied. The numerical simulations were performed by solving the Navier-Stokcs （N-S） equations in two-dimensional （2-D） general orthogonal coordinates. The computed results were compared with experimental findings.

关 键 词：Marangoni对流 表面张力 Navier—Stokes方程 数学模拟 

分 类 号：TK123[动力工程及工程热物理—工程热物理]