Volume-preserving strategies to improve the mixing efficiency of serpentine micromixers

Razavi Bazaz, S; Hazeri, AH; Rouhi, O; Mehrizi, AA; Jin, D; Warkiani, ME

Volume-preserving strategies to improve the mixing efficiency of serpentine micromixers

Razavi Bazaz, S

Hazeri, AH Rouhi, O Mehrizi, AA Jin, D

Warkiani, ME

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Publisher:: IOP PUBLISHING LTD
Publication Type:: Journal Article
Citation:: Journal of Micromechanics and Microengineering, 2020, 30, (11)
Issue Date:: 2020-11-01

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Field	Value	Language
dc.contributor.author	Razavi Bazaz, S https://orcid.org/0000-0002-6419-3361
dc.contributor.author	Hazeri, AH
dc.contributor.author	Rouhi, O
dc.contributor.author	Mehrizi, AA
dc.contributor.author	Jin, D https://orcid.org/0000-0003-1046-2666
dc.contributor.author	Warkiani, ME
dc.date.accessioned	2020-11-23T05:20:04Z
dc.date.available	2020-11-23T05:20:04Z
dc.date.issued	2020-11-01
dc.identifier.citation	Journal of Micromechanics and Microengineering, 2020, 30, (11)
dc.identifier.issn	0960-1317
dc.identifier.issn	1361-6439
dc.identifier.uri	http://hdl.handle.net/10453/144255
dc.description.abstract	© 2020 IOP Publishing Ltd. In this study, we have proposed volume-preserving strategies to boost chaoticadvection and improve the mixing efficiency of serpentine micromixers. The proposed strategies revolve around the point that the volume of the micromixer is kept constant during the manipulation. The first strategy involves the utilization of a nozzle-diffuser (ND) shaped microchannel. Using this, the velocity of the fluids fluctuates in an alternating pattern, leading to additional chaotic advection, a decrease in the mixing path, and an increase in the mixing index. The second strategy uses non-aligned inlets to generate swirl inducing effects at the microchannel entrance, where the collision of two fluids generates angular momentum in the flow, providing more chaotic advection. These strategies proved to be effective in boosting the mixing efficiency over wide ranges of Re in which 60% enhancement (from 20.53% to 80.31%) was achieved for Re of 30 by applying an ND shaped microchannel, and 20% enhancement (from 12.71% to 32.21%) was achieved for a critical Re of 15 by applying both of the strategies simultaneously.
dc.language	English
dc.publisher	IOP PUBLISHING LTD
dc.relation	http://purl.org/au-research/grants/arc/DP170103704
dc.relation	http://purl.org/au-research/grants/arc/DP180103003
dc.relation	http://purl.org/au-research/grants/nhmrc/GNT1143377
dc.relation	http://purl.org/au-research/grants/nhmrc/1143377
dc.relation.ispartof	Journal of Micromechanics and Microengineering
dc.relation.isbasedon	http://dx.doi.org/10.1088/1361-6439/abb8c2
dc.rights	This is an author-created, un-copyedited version of an article accepted for publication in Journal of Micromechanics and Microengineering. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher-authenticated version is available online at http://dx.doi.org/10.1088/1361-6439/abb8c2.	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	09 Engineering, 10 Technology
dc.subject.classification	Nanoscience & Nanotechnology
dc.title	Volume-preserving strategies to improve the mixing efficiency of serpentine micromixers
dc.type	Journal Article
utslib.citation.volume	30
utslib.for	09 Engineering
utslib.for	10 Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Biomedical Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - IBMD - Initiative for Biomedical Devices
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CHT - Health Technologies
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2020-11-23T05:19:58Z
pubs.issue	11
pubs.publication-status	Published
pubs.volume	30
utslib.citation.issue	11

Abstract:

© 2020 IOP Publishing Ltd. In this study, we have proposed volume-preserving strategies to boost chaoticadvection and improve the mixing efficiency of serpentine micromixers. The proposed strategies revolve around the point that the volume of the micromixer is kept constant during the manipulation. The first strategy involves the utilization of a nozzle-diffuser (ND) shaped microchannel. Using this, the velocity of the fluids fluctuates in an alternating pattern, leading to additional chaotic advection, a decrease in the mixing path, and an increase in the mixing index. The second strategy uses non-aligned inlets to generate swirl inducing effects at the microchannel entrance, where the collision of two fluids generates angular momentum in the flow, providing more chaotic advection. These strategies proved to be effective in boosting the mixing efficiency over wide ranges of Re in which 60% enhancement (from 20.53% to 80.31%) was achieved for Re of 30 by applying an ND shaped microchannel, and 20% enhancement (from 12.71% to 32.21%) was achieved for a critical Re of 15 by applying both of the strategies simultaneously.

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http://hdl.handle.net/10453/144255