Chaotic mixing of two similar fluids in the presence of a third dissimilar fluid

Zhang, D. F.; Zumbrunnen, D. A.

doi:10.1002/aic.690421202

Cited by 12 publications

(4 citation statements)

References 24 publications

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“…More information about the CSF technique is available in recent papers (Kothe et al, 1991;Richards et al, 1993;Zhang and Zumbrunnen, 1996;Zhang, 1996). With interfacial forces obtained from the VOF method and the CSF technique, the continuity and momentum equations in Cartesian coordinates were nondimensionalized in terms of suitable dimensionless parameters and variables (see the Notation section).…”

Section: Governing Equations and Numerical Modelingmentioning

confidence: 95%

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Morphology development in shear flows of straight and folded molten fibers

1998

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Section: Governing Equations and Numerical Modelingmentioning

confidence: 95%

“…A two-dimensional Eulerian model, which had been used recently in a fundamental study of fluid mixing (Zhang and Zumbrunnen, 1996), was modified for this purpose. Mathematical details for extending the model to threedimensional interfaces have been presented by Zhang (1996).…”

Section: Governing Equations and Numerical Modelingmentioning

confidence: 99%

Morphology development in shear flows of straight and folded molten fibers

1998

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“…As a new computational fluid dynamics method, restrictions on model parameters such as component viscosity ratio and interfacial tension currently exist. Volume-of-fluid methods [19] for interface tracking and continuum surface force representations [20] for interfacial tension have also been used to study simpler morphology transitions and minor component body interactions in chaotic advection [21][22][23].…”

Section: Methodsmentioning

confidence: 99%

Smart Blending: Functional Fine-Scale Structures Formed by Intelligent Agitations in Multi-Component Melts

Zumbrunnen

2003

Volume 2: Symposia, Parts A, B, and C

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In viscous melts, turbulence often does not arise. Consequently, opportunities exist for controllably organizing melt components into functional structures that can have very small feature sizes. In this paper, concepts and results of smart blending are described. Smart blending entails the controllable development in situ of a variety of fine-scale structures in the melt by intelligent agitations. Once formed, structures may be useful in the melt or may be captured in applicable products by extrusion and solidification. Chaotic advection is an enabling recent sub-field of fluid mechanics for smart blending since it provides a means to stretch and fold melt domains and evolve a multi-layer structure leading to derivative arrangements, or indirectly manipulate solid additives. Applications include the production of plastics with enhanced mechanical properties, electrically conducting plastics and glasses, low permeation films, membranes, and nano- and molecular-scale composites.

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“…According to Equation ( 12), the increase of light speed in a medium causes the decrease (12) where RI water and RI glycerol are the refractive indices of water and glycerol, respectively Takamura, Fischer and Morrow [42]. Literature reports that RI water = 1.325 Larin, et al [54] and RI glycerol = 1.470 at θ = 298.15 K Polyanskiy [41].…”

Section: Refractive Index Of Glycerol Solutionmentioning

confidence: 99%

Design of Model Fluids for Flow Characterization Experiments Involving Mixing of Dissimilar Fluids—Refractive Index Matching and Physical Properties

Brito

2022

Processes

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Aqueous solutions of glycerol are widely used as model fluids in flow phenomena experiments. The design of these experiments involves the description of the physical properties of liquids and the refractive index matching using a salt, i.e., calcium chloride. The first part of this paper describes the physical properties of aqueous solutions of glycerol. Refractive index, viscosity, and density were measured for a mass fraction of glycerol in a range from 0 to 1 and compared to the data in the literature. In the second part, calcium chloride was added to aqueous solutions of glycerol, and the variations of density, viscosity, and refractive index with the mass fraction of calcium chloride were reported, which is a new contribution to literature. The main novelties of this work are (1) the development and validation of a set of equations to predict the rheological and physical properties of model fluids for flow studies involving dissimilar fluids; (2) the introduction of an algorithm to match the refractive index of fluids using calcium chloride. The model fluids are designed for large throughput experiments of industrial units, and low-cost solutions were considered. A Matlab script is provided that enables the easy implementation of this method in other works.

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Chaotic mixing of two similar fluids in the presence of a third dissimilar fluid

Cited by 12 publications

References 24 publications

Morphology development in shear flows of straight and folded molten fibers

Morphology development in shear flows of straight and folded molten fibers

Smart Blending: Functional Fine-Scale Structures Formed by Intelligent Agitations in Multi-Component Melts

Design of Model Fluids for Flow Characterization Experiments Involving Mixing of Dissimilar Fluids—Refractive Index Matching and Physical Properties

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