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Numerical investigation of laminar mixing in a coaxial microreactor

Published online by Cambridge University Press:  10 November 2006

L. DJENIDI  and
B. MOGHTADERI
L. DJENIDI
Affiliation:
School of Engineering, The University of Newcastle, Newcastle, 2308 NSW, Australia
B. MOGHTADERI
Affiliation:
School of Engineering, The University of Newcastle, Newcastle, 2308 NSW, Australia
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Abstract

This paper reports on a lattice Boltzmann simulation of laminar mixing in a coaxial microreactor at low Reynolds numbers. The main focus of the study was to compare the effectiveness of a multi-holed baffle plate, a set of $2 \,{\times}\, 2$ square bars, and a flat-plate arrangement on the enhancement of reagent mixing inside the reactor. It was found that all three mixers increased mixing through the mechanism of generating coherent structures, which in turn increased interface contact between the fluid streams. However, for this particular microreactor, the efficiency of each mixer depended on its ability to generate coherent structures with high helicity and thereby inducing a swirl motion to the flow.

Type
Papers
Information
Journal of Fluid Mechanics , Volume 568 , 10 December 2006 , pp. 223 - 242
Copyright
© 2006 Cambridge University Press

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