An Ellipsoidal Droplet Model For Dilute Emulsions: Application To Complex Mixing Flows

A compact droplet model and numerical simulation are used to examine the behavior of multiphase fluids in complex mixing flows. The two-dimensional, timeperiodic fluid between eccentric cylinders is used as a prototypical chaotic mixing flow. The multiphase fluid is a dilute dispersion of Newtonian...

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Published in:WIT Transactions on Engineering Sciences 2003-01, Vol.42
Main Authors: C.L. Tucker III, Florek, C A, Pham, T
Format: Article
Language:English
Subjects:
Chaos theory
Computational fluid dynamics
Computer simulation
Cylinders
Deformation
Dilution
Droplets
Emulsions
Mathematical models
Multiphase
Spatial distribution
Stretching
Surface tension
Two dimensional flow
Viscosity
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creator C.L. Tucker III
Florek, C A
Pham, T
description A compact droplet model and numerical simulation are used to examine the behavior of multiphase fluids in complex mixing flows. The two-dimensional, timeperiodic fluid between eccentric cylinders is used as a prototypical chaotic mixing flow. The multiphase fluid is a dilute dispersion of Newtonian droplets in a Newtonian matrix. The droplets are assumed to be much smaller than the mixer dimensions, and to have no interfacial tension, a situation for which there is an exact, yet compact, model for droplet deformation. We examine the spatial distribution of droplet stretching, as well as global stretching statistics, for a variety of droplet-to-matrix viscosity ratios. Chaotic flows are able to stretch high-viscosity droplets (which cannot be stretched in simple she
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subjects Chaos theory
Computational fluid dynamics
Computer simulation
Cylinders
Deformation
Dilution
Droplets
Emulsions
Mathematical models
Multiphase
Spatial distribution
Stretching
Surface tension
Two dimensional flow
Viscosity
title An Ellipsoidal Droplet Model For Dilute Emulsions: Application To Complex Mixing Flows
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