Fluid Dynamics

, Volume 9, Issue 6, pp 882–889 | Cite as

Mass transfer between bubbles and the continuous phase in a fluidized bed of variable cross section

  • Yu. P. Gupalo
  • Yu. S. Ryazantsev
  • Yu. A. Sergeev


A study is made of mass transfer in an inhomogeneous fluidized bed whose cross section varies over the height. The field of the liquid phase around a bubble is constructed, conditions are obtained for the existence of a region of closed circulation of the liquid phase, and the boundaries of this region are determined. A solution is given to the problem of convective diffusion of the substance to the region of closed circulation, and the mass-transfer coefficient between a bubble and the continuous phase is determined as a function of the flow parameters. By the same token, the results of [1] are generalized to a fluidized bed of variable cross section. It is shown that in this case the mass transfer is improved.


Mass Transfer Liquid Phase Continuous Phase Flow Parameter Closed Circulation 
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Literature cited

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    Yu. P. Gupalo, Yu. S. Ryazantsev, and Yu. A. Sergeev, “Mass transfer between bubbles and the continuous phase in a fluidized bed,” Izv. Akad. Nauk SSSR, Mekhan. Zhidk. i Gaza, No. 4 (1973).Google Scholar
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Copyright information

© Plenum Publishing Corporation 1976

Authors and Affiliations

  • Yu. P. Gupalo
    • 1
  • Yu. S. Ryazantsev
    • 1
  • Yu. A. Sergeev
    • 1
  1. 1.Moscow

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