NDLI: Numerical simulations for the rheological characteristics of emulsions under several conditions including temperature, shear rate, surfactant concentration and droplet size

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The Journal of Engineering

Numerical simulations for the rheological characteristics of emulsions under several conditions including temperature, shear rate, surfactant concentration and droplet size

Content Provider	IET Digital Library
Author	Choi, Se Bin Lee, Jung Shin Baik, Seung Joo Lee, Joon Sang
Abstract	An emulsion system was simulated under simple shear rates to analyse its rheological characteristics using the lattice Boltzmann method. The relative viscosity of an emulsion under a simple shear flow along with changes in temperature, shear rate, surfactant concentration and droplet size was calculated. The relative viscosity of emulsions decreased with increase in temperature. The shear thinning phenomena explaining the inverse proportion between shear rate and viscosity were observed. An increase in the surfactant concentration caused an increase in the relative viscosity for a decane-in-water emulsion, because the increased deformation caused by the decreased interfacial tension significantly influenced the wall shear stress. An increase in droplet size caused a decrease in the relative viscosity and smaller shear thinning behaviour because of decreased aggregational and repulsive forces within the emulsion system.
Starting Page	896
Ending Page	900
Page Count	5
Volume Number	9
e-ISSN	17500443
Issue Number	Issue 12, Dec (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/mnl/9/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/mnl.2014.0426
Journal	Micro & Nano Letters
Publisher Date	2014-12-03
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Angle of Contact Computational Method Decane-in-water Emulsion Deformation Droplet Size Drops Emulsion System Emulsions Emulsions And Suspensions Flow Simulation Fluid Surface Energy General Fluid Dynamics Theory H2O Interface Tension Interfacial Tension Inverse Proportion Lattice Boltzmann Method Mechanical Property of Liquids Multiphase Flows Numerical Analysis Numerical Approximation And Analysis Numerical Simulation Organic Compound Relative Viscosity Rheological Characteristic Rheology Rheology of Fluid And Pastes Shear Flow Shear Rate Shear Strength Shear Thinning Simulation Surface Tension Surfactant Concentration Surfactants Viscosity Viscosity of Liquids; Diffusive Momentum Transport Wall Shear Stress Water
Content Type	Text
Resource Type	Article

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