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Instabilities in a horizontal liquid layer in cocurrent gas flow with an evaporating interface

par Liu, Rong;Kabov, Oleg
Référence Physical review. E, Statistical, nonlinear, and soft matter physics, 85, 6, 066305
Publication Publié, 2012-06

Article révisé par les pairs

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Résumé :

The problem of a two-layer system consisting of a horizontal liquid layer in contact with its own vapor is considered. The liquid layer is bounded by a rigid wall from below, and phase change can occur at the interface. The flow of the vapor phase is driven by a constant pressure gradient in the streamwise direction. We have taken into account the effects of buoyancy, thermocapillarity, evaporation, and the dynamics of the vapor phase. A full linear stability analysis is performed using a Chebyshev spectral method. The influences of evaporation effect and the interfacial shear on the Rayleigh instability and the Marangoni instability have been studied. The results show that both the evaporation and the interfacial shear play important roles in the stability of the system. © 2012 American Physical Society.