This study deals with the numerical analysis of transient heat and species transfer by natural convection in a binary fluid vertical layer. The cavity is differentially heated and a solutal buoyancy force is created by imposing a concentration step at one vertical wall: This refers to the experimental situation where the composition gradient inducing the solutal buoyancy force is created by melting of pure ice in a salty solution. The constitution of the flow structure and the time evolution of the heat and mass transfer characteristics are studied for opposing body forces over a range of thermal and solutal Rayleigh numbers. The numerical results allow to provide a better insight into the mechanisms driving the heat and species transfer at high Lewis number thermohaline convection. [S0022-1481(00)00303-0]

Issue Section:
Technical Notes
Keywords:
convection, confined flow, flow simulation, Computational Double Diffusion, Heat Transfer, Modeling, Natural Convection
Topics:
Boundary-value problems, Convection, Flow (Dynamics), Heat transfer, Mass transfer, Transients (Dynamics), Heat, Buoyancy, Natural convection, Fluids, Rayleigh number, Cavities
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