Mass Transfer across an Interface between Layers in a Double Diffusive Natural Convection

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Hiroyuki Ozoe¹  Katsuyoshi Kamakura² 

[1]Institute of Advanced Material Study, Kyushu University

[2]Toyama National College of Technology

关键词: Mass Transfer;    Heat Transfer;    Natural Convection;    Double Diffusive Convection;    Two-Layer Convection;   

DOI  :  10.1252/jcej.28.745

来源: Maruzen Company Ltd

【 摘 要 】

References(7)Cited-By(1)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 Pr = 6, the aspect ratio A = 4, the Rayleigh number Ra = 104, the buoyancy ratio N = 2 to 10 and the Lewis number Le = 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.

【 授权许可】

Unknown