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 | |
| 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
Cite this
Scalar mixing with fixed and fluidized particles in micro-reactors. / Derksen, J. J.
In: Chemical Engineering Research & Design, Vol. 87, No. 4A, 04.2009, p. 550-556.Research output: Contribution to journal › Article
}
TY - JOUR
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
VL - 87
SP - 550
EP - 556
JO - Chemical Engineering Research & Design
JF - Chemical Engineering Research & Design
SN - 0263-8762
IS - 4A
ER -