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Numerical investigation of two-phase flow under influence of electric field

Numerical investigation of two-phase flow under influence of electric field

Date28th Apr 2022

Time03:00 PM

Venue Online Meeting Link: https://meet.google.com/bub-whag-yqf

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Details

Hydrodynamic behaviour of two-phase immiscible flows has great importance in a wide variety of industries such as printing, polymer, food, petroleum, pharmaceuticals etc. The active control over the dynamics of two-phase flow is very difficult. One way to achieve active control over this phenomenon is by applying an external field, and electric field is one such field. Electric module is developed over the pre-existing VoF module of interface capturing. When a neutrally buoyant dielectric drop suspended in dielectric continuous phase is subjected to an electric field, the interface experiences electric stress. This electric stress is balanced by the surface tension force, which leads to the deformation of drop. For a various combination of conductivity ratio, permittivity ratio and viscosity ratio the effect of electric field strength on drop deformation is studied. Two different shape regimes, oblate and prolate shapes are obtained for the downward directional electric field. The flow patterns inside and outside the drop are studied. A good amount of experimental, analytical and numerical literature is available for EHD drop deformation. Hence, the electric module is validated for the EHD drop deformation phenomenon. However, there is a lack of literature for other EHD phenomena such as rising bubbles under influence of electric field, Electrocoalescence and Dielectrophoresis. The present study is aimed to explore the dynamics of such EHD phenomena.

Speakers

Mr. Darshan Pravinbhai Patel (AM18D003)

Department of Applied Mechanics