Multi-scale simulations of stirred liquid-liquid dispersions

J. J. Derksen; H. E.A. Van Den Akker

doi:10.1205/cherd06161

Multi-scale simulations of stirred liquid-liquid dispersions

J. J. Derksen, H. E.A. Van Den Akker

Delft University of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

Direct numerical simulations (DNS) of liquid-liquid dispersions in a three-dimensional periodic domain have been performed by means of the lattice-Boltzmann method. The dispersion was agitated by a random force field such as to produce isotropic turbulence. The turbulence levels and its history were based on a fluid parcel in a turbulently stirred tank traversing the impeller swept region. The DNS provide detailed insight in the coalescence and break-up events brought about by the turbulent flow, the evolution of the drop size distribution in time, and the interaction of the small-scale flow and the droplets as witnessed in terms of the spectral characteristics of the turbulence.

Original language	English
Pages (from-to)	697-702
Number of pages	6
Journal	Chemical Engineering Research and Design
Volume	85
Issue number	5 A
DOIs	https://doi.org/10.1205/cherd06161
Publication status	Published - May 2007
Externally published	Yes

Keywords

Break-up
Coalescence
Lattice - Boltzmann
Liquid-liquid dispersion
Numerical simulation
Turbulence

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10.1205/cherd06161

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abstract = "Direct numerical simulations (DNS) of liquid-liquid dispersions in a three-dimensional periodic domain have been performed by means of the lattice-Boltzmann method. The dispersion was agitated by a random force field such as to produce isotropic turbulence. The turbulence levels and its history were based on a fluid parcel in a turbulently stirred tank traversing the impeller swept region. The DNS provide detailed insight in the coalescence and break-up events brought about by the turbulent flow, the evolution of the drop size distribution in time, and the interaction of the small-scale flow and the droplets as witnessed in terms of the spectral characteristics of the turbulence.",

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AU - Van Den Akker, H. E.A.

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AB - Direct numerical simulations (DNS) of liquid-liquid dispersions in a three-dimensional periodic domain have been performed by means of the lattice-Boltzmann method. The dispersion was agitated by a random force field such as to produce isotropic turbulence. The turbulence levels and its history were based on a fluid parcel in a turbulently stirred tank traversing the impeller swept region. The DNS provide detailed insight in the coalescence and break-up events brought about by the turbulent flow, the evolution of the drop size distribution in time, and the interaction of the small-scale flow and the droplets as witnessed in terms of the spectral characteristics of the turbulence.

KW - Break-up

KW - Coalescence

KW - Lattice - Boltzmann

KW - Liquid-liquid dispersion

KW - Numerical simulation

KW - Turbulence

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VL - 85

SP - 697

EP - 702

JO - Chemical Engineering Research and Design

JF - Chemical Engineering Research and Design

IS - 5 A

ER -

Multi-scale simulations of stirred liquid-liquid dispersions

Abstract

Keywords

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