• PENETRATIVE CONVECTION IN A BINARY FLUID WITH SORET EFFECT
Abstract
The onset of Marangoni instability in a binary fluid mixture with internal heat source and Soret effect under zero gravity in a fluid layer is studied. The bottom boundary of the fluid layer is assumed to be either conducting or insulating to temperature and solute concentration perturbations while the top boundary is free and insulating. The linear stability analysis is followed and an exact solution is obtained for the corresponding eigen value problem by assuming that stationary convection is exhibited at the neutral state. The Soret parameter and the presence of volumetric internal heat source in a fluid layer play a decisive role on the stability characteristics of the system. It is observed that both stabilizing and destabilizing factors can be enhanced due to the simultaneous presence of a volumetric source and Soret effect so that a more precise control (suppress or augment) of Marangoni instability in a binary fluid mixture of fluid layer is possible.
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