Prediction of Fluid Velocity Distribution near a Rising Bubble  

作　　者：成弘 周明 

机构地区：[1]Distillation Laboratory of State Key Laboratories of Chemical Engineering, Tianjin University, Tianjin 300072,China

出　　处：《Chinese Journal of Chemical Engineering》2002年第5期539-544,共6页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No. 20076032).

摘　　要：Flow and concentration fields of liquid phase in a gas-liquid contacting system are simulated to showthe Rayleigh convection by utilizing the finite-element method. The Schlieren images in CO2-ethanol system provided direct visual verification of the present simulation, and the simulated results were well consistent with theexperimental observation. The influence of the Rayleigh convection on mass transfer is analyzed qualitatively andquantitatively based on the simulated and the experimental results.Flow and concentration fields of liquid phase in a gas-liquidcontacting system are simulated to show the Rayleigh convection byutilizing the finite-element method. The Schlieren images inCO_2-ethanol system pro- vided direct visual verification of thepresent simulation, and the simulated results were well consistentwith the experimental observation. The influence of the Rayleighconvection on mass transfer is analyzed qualitatively andquantitatively based on the simulated and the experimental results.

关 键 词：rayleigh effect DIFFUSION Schlieren device finite-element method 

分 类 号：TQ021[化学工程]