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Experimental study of efficient mixing in micro-fluidized bed

Lookup NU author(s): Dr Vladimir Zivkovic



This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).


The micro-fluidized bed represents 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 in a micro-fluidized bed in terms of an efficiency index and the efficiency 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 efficiency in a 400 x 175 μm2 polydimethylsiloxane (PDMS) Y-shaped microchannel. The micro-fluidized bed was found to afford mixing efficiencies up to 300% greater than those in the particle-free channel as shown in Figure 1. The mixing systems appear to have an optimal operating voidage of around 0.7, at which the efficiency of mixing is maximized.

Publication metadata

Author(s): Zivkovic V, Ridge N, Biggs MJ

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 13th International Conference on Microreaction Technology (IMRET)

Year of Conference: 2014

Date deposited: 20/05/2015

Publisher: Flow Chemistry Society / Akadémiai Kiadó


Library holdings: Search Newcastle University Library for this item

ISBN: 9789630595186