MASS TRANSFER ACROSS AN INTERFACE BETWEEN LAYERS IN A DOUBLE DIFFUSIVE NATURAL CONVECTION

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When a two-layer system which consists of a solvent (upper layer) and a solution (lower layer) is heated from a vertical side wall and cooled from the opposing side wall, convection starts in each layer. A Galerkin finite-element method was employed for the numerical analyses of this two-layer convection. Computations were carried out for the Prandtl number <I>Pr</I> = 6, the aspect ratio <I>A</I> = 4, the Rayleigh number <I>Ra</I> = 10<SUP>4</SUP>, the buoyancy ratio <I>N</I> = 2 to 10 and the Lewis number <I>Le</I> = 10 to 100. The concentration in the upper layer increased linearly with time through the transfer of the solute across the interface between the layers. In conclusion, the flux of a solute across the interface was independent of the concentration difference between the layers, but dependent on the diffusion coefficient.

収録刊行物

  • Journal of chemical engineering of Japan  

    Journal of chemical engineering of Japan 28(6), 745-749, 1995-12-01 

    The Society of Chemical Engineers, Japan

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各種コード

  • NII論文ID(NAID)
    10002134887
  • NII書誌ID(NCID)
    AA00709658
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00219592
  • データ提供元
    CJP書誌  J-STAGE 
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