Relative viscosity of emulsions in simple shear flow: Temperature, shear rate, and interfacial tension dependence

Se Bin Choi; Joon Sang Lee

doi:10.3795/KSME-B.2015.39.8.677

Relative viscosity of emulsions in simple shear flow: Temperature, shear rate, and interfacial tension dependence

Se Bin Choi, Joon Sang Lee

Department of Mechanical Engineering

Research output: Contribution to journal › Article

Abstract

We simulate an emulsion system under simple shear rates to analyze its rheological characteristics using the lattice Boltzmann method (LBM). We calculate the relative viscosity of an emulsion under a simple shear flow along with changes in temperature, shear rate, and surfactant concentration. The relative viscosity of emulsions decreased with an increase in temperature. We observed the shear-thinning phenomena, which is responsible for the inverse proportion between the shear rate and viscosity. An increase in the interfacial tension caused a decrease in the relative viscosity of the decane-in-water emulsion because the increased deformation caused by the decreased interfacial tension significantly influenced the wall shear stress.

Original language	English
Pages (from-to)	677-682
Number of pages	6
Journal	Transactions of the Korean Society of Mechanical Engineers, B
Volume	39
Issue number	8
DOIs	https://doi.org/10.3795/KSME-B.2015.39.8.677
Publication status	Published - 2015 Aug

All Science Journal Classification (ASJC) codes

Mechanical Engineering

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Choi, S. B., & Lee, J. S. (2015). Relative viscosity of emulsions in simple shear flow: Temperature, shear rate, and interfacial tension dependence. Transactions of the Korean Society of Mechanical Engineers, B, 39(8), 677-682. https://doi.org/10.3795/KSME-B.2015.39.8.677

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