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The Numerical Analysis of the Gas-Liquid Absorption Process Accompanied by Rayleigh
Convection

SHA Yong; CHENG Hong; YU Yihong   

  1. Distillation Laboratory of State Key Laboratories of Chemical Engineering, Tianjin
    University, Tianjin 300072,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-10-28 Published:2002-10-28
  • Contact: SHA Yong

伴有Rayleigh对流的气液吸收过程数值模拟

沙勇; 成弘; 于艺红   

  1. Distillation Laboratory of State Key Laboratories of Chemical Engineering, Tianjin
    University, Tianjin 300072,China
  • 通讯作者: 沙勇

Abstract: 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.

Key words: Rayleigh effect, diffusion, Schlieren device, finite-element method

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.

关键词: Rayleigh effect;diffusion;Schlieren device;finite-element method