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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/27904

Title: Experimental study of efficient mixing in a micro-fluidized bed
Authors: Zivkovic, Vladimir
Ridge, Nadia
Biggs, Mark J.
Keywords: Fluidization
Mixing efficiency
Micro-fluidized bed
Micro-mixer
Multiphase flow
Process intensification
Issue Date: 2017
Publisher: © Elsevier
Citation: ZIVKOVIC, V., RIDGE, N. and BIGGS, M.J., 2017. Experimental study of efficient mixing in a micro-fluidized bed. Applied Thermal Engineering, 127, pp. 1642-1649.
Abstract: Micro-fluidized beds represent a novel means of significantly enhancing mixing and mass and heat transfer under the low Reynolds number flows that dominate in microfluidic devices. This study experimentally evaluates the mixing performance of a micro-fluidized bed and the improvements it affords over the equivalent particle-free system. The dye dilution technique coupled with standard top-view image analysis was used to characterize the mixing in a 400×175μm 2 polydimethylsiloxane (PDMS) Y-microchannel. Overall, the micro-fluidized bed provided a mixing effectiveness and energetic efficiency of mixing that were up to three times greater than those of a particle-free channel of the same dimensions. The mixing performance is strongly affected by specific power input and bed voidage. The optimal operating voidage, which corresponds to the energetic efficiency of mixing being maximal, is around 0.77 for the smallest particle-to-channel size ratio considered here 0.121, and appears to increase beyond this with size ratio.
Description: This paper is closed access until 1st September 2018.
Version: Accepted for publication
DOI: 10.1016/j.applthermaleng.2017.08.144
URI: https://dspace.lboro.ac.uk/2134/27904
Publisher Link: https://doi.org/10.1016/j.applthermaleng.2017.08.144
ISSN: 1359-4311
Appears in Collections:Closed Access (Chemistry)

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