External Field Induced Flow Patterns in Microscale Multiphase Flows (original) (raw)
Introduction: The study of multiphase flows inside the microfluidic devices have received much attention recently because of its variety of application related to heat and mass transfer, mixing, microreaction, and emulsification [1]. Many researchers have concentrated on the influence of flow rate of the fluids, fluid properties such as surface or interfacial tensions, contact angle and viscosity of the liquids on the interfacial morphologies and their transitions [2]. The results suggest that a host of interesting flow patterns can be achieved by controlling the fluid properties (interfacial tension, viscosity) and flow conditions (flow rate). Use of COMSOL Multiphysics: In the present study, we explore the pathways to control the flow morphologies of a liquid-liquid multiphase flow employing an external electrostatic field. The oil-water multiphase system is modelled employing the commercial software COMSOL MULTIPHYSICS. The electrohydrodynamics (EHD) of the multiphase system is n...
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