Film Thickness Studies of Viscous Taylor Droplet Flow

This reported work studies the dynamics of a moderately viscous Taylor droplet in a 500 μm diameter circular microchannel. The focus is on the dynamics within the visco-inertial regime, and the study is performed numerically using the isoAdvector volume of fluid available in OpenFOAM v2012. A 2D axi...

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Published in:Industrial & engineering chemistry research 2024-05, Vol.63 (22), p.9988-9997
Main Authors: Deepak, Vilayil, Vengadesan, Sankaranarayanan
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Language:English
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chemistry
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droplets
equations
Thermodynamics, Transport, and Fluid Mechanics
viscosity
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description This reported work studies the dynamics of a moderately viscous Taylor droplet in a 500 μm diameter circular microchannel. The focus is on the dynamics within the visco-inertial regime, and the study is performed numerically using the isoAdvector volume of fluid available in OpenFOAM v2012. A 2D axisymmetric domain is chosen and validated against experimental results in the visco-inertial regime from the literature. Taylor droplets of viscosity ratio (defined as dispersed phase to continuous phase) in the range of 0.5 to 5 are considered. The influence of the viscosity ratio on the droplet velocity, film velocity, internal circulation within the droplet, and film thickness is analyzed. A new film thickness equation is proposed for the visco-inertial regime. The proposed equation accurately predicts the present study and performs well with the available experimental film thickness data from the literature.
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subjects chemistry
domain
droplets
equations
Thermodynamics, Transport, and Fluid Mechanics
viscosity
title Film Thickness Studies of Viscous Taylor Droplet Flow
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