SCI和EI收录∣中国化工学会会刊

›› 2015, Vol. 23 ›› Issue (2): 356-365.DOI: 10.1016/j.cjche.2014.11.026

• 流体力学与传递现象 • 上一篇    下一篇

Three-dimensional simulation of interfacial convection in CO2-ethanol system by hybrid lattice Boltzmann method with experimental validation

Wei Chen, Shuyong Chen, Xigang Yuan, Huishu Zhang, Kuotsung Yu   

  1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
  • 收稿日期:2013-07-20 修回日期:2014-02-17 出版日期:2015-02-28 发布日期:2015-03-01
  • 通讯作者: Xigang Yuan
  • 基金资助:
    Supported by the National Natural Science Foundation of China (20736005).

Three-dimensional simulation of interfacial convection in CO2-ethanol system by hybrid lattice Boltzmann method with experimental validation

Wei Chen, Shuyong Chen, Xigang Yuan, Huishu Zhang, Kuotsung Yu   

  1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
  • Received:2013-07-20 Revised:2014-02-17 Online:2015-02-28 Published:2015-03-01
  • Supported by:
    Supported by the National Natural Science Foundation of China (20736005).

摘要: By using a hybrid lattice-Boltzmann-finite-difference method (hybrid LBM-FDM method), three-dimensional simulations of solutal interfacial convection were conducted for the process of CO2 absorption into ethanol. A self-renewal interface model is adopted as an interfacial perturbation model. The simulation results revealed some three-dimensional features of the induced interfacial convection, such as the development of diverging cellular flowand Rayleigh plume-like convection in liquid phase. The concentration distribution of the simulation result is validated and found to be in well agreement with the Schlieren visualization results qualitatively. Additionally, the mass transfer enhancements by interfacial convection were investigated via both simulation and experiment for the absorption process, and the mass transfer is shown to be enhanced by the interfacial convection by about two-fold comparing with that by diffusion.

关键词: Hybrid, LBM-FDM, Solutal interfacial mass transfer, Interfacial convection, Mass transfer rate, Schlieren technique

Abstract: By using a hybrid lattice-Boltzmann-finite-difference method (hybrid LBM-FDM method), three-dimensional simulations of solutal interfacial convection were conducted for the process of CO2 absorption into ethanol. A self-renewal interface model is adopted as an interfacial perturbation model. The simulation results revealed some three-dimensional features of the induced interfacial convection, such as the development of diverging cellular flowand Rayleigh plume-like convection in liquid phase. The concentration distribution of the simulation result is validated and found to be in well agreement with the Schlieren visualization results qualitatively. Additionally, the mass transfer enhancements by interfacial convection were investigated via both simulation and experiment for the absorption process, and the mass transfer is shown to be enhanced by the interfacial convection by about two-fold comparing with that by diffusion.

Key words: Hybrid, LBM-FDM, Solutal interfacial mass transfer, Interfacial convection, Mass transfer rate, Schlieren technique