Scalar mixing with fixed and fluidized particles in micro-reactors

J. J. Derksen

doi:10.1016/j.cherd.2008.10.007

Scalar mixing with fixed and fluidized particles in micro-reactors

J. J. Derksen^*

^*Corresponding author for this work

Engineering

University of Alberta

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

14 Citations (Scopus)

Abstract

we study by means of direct numerical simulation the mixing performance of fixed and fluidized beds of spherical, monodisperse particles in narrow channels. Mixing performance is being characterized by an effective diffusion coefficient. The Reynolds numbers based on the channel width and superficial velocity are of the order of 10. Under these laminar conditions the mixing of a passive scalar is greatly enhanced by the presence of particles, with mobile particles (in fluidized beds) performing much better than fixed particles. The simulations allow for the design of micro-scale mixing devices in terms of reactor size (length and width), particle size, solids volume fraction, and flow rate. (C) 2008 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	550-556
Number of pages	7
Journal	Chemical Engineering Research & Design
Volume	87
Issue number	4A
DOIs	https://doi.org/10.1016/j.cherd.2008.10.007
Publication status	Published - Apr 2009
Event	13th European Conference on Mixing - London Duration: 14 Apr 2009 → 17 Apr 2009

Keywords

Micro-reactor
Scalar mixing
Fluidization
Laminar flow
HYPERBOLIC CONSERVATION-LAWS
HIGH-RESOLUTION SCHEMES
SIMULATIONS

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title = "Scalar mixing with fixed and fluidized particles in micro-reactors",

abstract = "we study by means of direct numerical simulation the mixing performance of fixed and fluidized beds of spherical, monodisperse particles in narrow channels. Mixing performance is being characterized by an effective diffusion coefficient. The Reynolds numbers based on the channel width and superficial velocity are of the order of 10. Under these laminar conditions the mixing of a passive scalar is greatly enhanced by the presence of particles, with mobile particles (in fluidized beds) performing much better than fixed particles. The simulations allow for the design of micro-scale mixing devices in terms of reactor size (length and width), particle size, solids volume fraction, and flow rate. (C) 2008 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.",

keywords = "Micro-reactor, Scalar mixing, Fluidization, Laminar flow, HYPERBOLIC CONSERVATION-LAWS, HIGH-RESOLUTION SCHEMES, SIMULATIONS",

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year = "2009",

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doi = "10.1016/j.cherd.2008.10.007",

language = "English",

volume = "87",

pages = "550--556",

journal = "Chemical Engineering Research & Design",

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publisher = "INST CHEMICAL ENGINEERS",

number = "4A",

note = "13th European Conference on Mixing ; Conference date: 14-04-2009 Through 17-04-2009",

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T1 - Scalar mixing with fixed and fluidized particles in micro-reactors

AU - Derksen, J. J.

PY - 2009/4

Y1 - 2009/4

N2 - we study by means of direct numerical simulation the mixing performance of fixed and fluidized beds of spherical, monodisperse particles in narrow channels. Mixing performance is being characterized by an effective diffusion coefficient. The Reynolds numbers based on the channel width and superficial velocity are of the order of 10. Under these laminar conditions the mixing of a passive scalar is greatly enhanced by the presence of particles, with mobile particles (in fluidized beds) performing much better than fixed particles. The simulations allow for the design of micro-scale mixing devices in terms of reactor size (length and width), particle size, solids volume fraction, and flow rate. (C) 2008 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

AB - we study by means of direct numerical simulation the mixing performance of fixed and fluidized beds of spherical, monodisperse particles in narrow channels. Mixing performance is being characterized by an effective diffusion coefficient. The Reynolds numbers based on the channel width and superficial velocity are of the order of 10. Under these laminar conditions the mixing of a passive scalar is greatly enhanced by the presence of particles, with mobile particles (in fluidized beds) performing much better than fixed particles. The simulations allow for the design of micro-scale mixing devices in terms of reactor size (length and width), particle size, solids volume fraction, and flow rate. (C) 2008 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

KW - Micro-reactor

KW - Scalar mixing

KW - Fluidization

KW - Laminar flow

KW - HYPERBOLIC CONSERVATION-LAWS

KW - HIGH-RESOLUTION SCHEMES

KW - SIMULATIONS

U2 - 10.1016/j.cherd.2008.10.007

DO - 10.1016/j.cherd.2008.10.007

M3 - Article

SN - 0263-8762

VL - 87

SP - 550

EP - 556

JO - Chemical Engineering Research & Design

JF - Chemical Engineering Research & Design

IS - 4A

T2 - 13th European Conference on Mixing

Y2 - 14 April 2009 through 17 April 2009

ER -

Scalar mixing with fixed and fluidized particles in micro-reactors

Abstract

Keywords

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