Modeling of mass transfer enhancement in a magnetofluidic micromixer

Kumar, C; Hejazian, M; From, C; Saha, SC; Sauret, E; Gu, Y; Nguyen, NT

Modeling of mass transfer enhancement in a magnetofluidic micromixer

Kumar, C Hejazian, M From, C

Saha, SC

Sauret, E Gu, Y Nguyen, NT

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Publication Type:: Journal Article
Citation:: Physics of Fluids, 2019, 31 (6)
Issue Date:: 2019-06-01

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Field	Value	Language
dc.contributor.author	Kumar, C	en_US
dc.contributor.author	Hejazian, M	en_US
dc.contributor.author	From, C https://orcid.org/0000-0001-9480-6694	en_US
dc.contributor.author	Saha, SC https://orcid.org/0000-0002-9962-8919	en_US
dc.contributor.author	Sauret, E	en_US
dc.contributor.author	Gu, Y	en_US
dc.contributor.author	Nguyen, NT	en_US
dc.date.issued	2019-06-01	en_US
dc.identifier.citation	Physics of Fluids, 2019, 31 (6)	en_US
dc.identifier.issn	1070-6631	en_US
dc.identifier.uri	http://hdl.handle.net/10453/134158
dc.description.abstract	© 2019 Author(s). The use of magnetism for various microfluidic functions such as separation, mixing, and pumping has been attracting great interest from the research community as this concept is simple, effective, and of low cost. Magnetic control avoids common problems of active microfluidic manipulation such as heat, surface charge, and high ionic concentration. The majority of past works on micromagnetofluidic devices were experimental, and a comprehensive numerical model to simulate the fundamental transport phenomena in these devices is still lacking. The present study aims to develop a numerical model to simulate transport phenomena in microfluidic devices with ferrofluid and fluorescent dye induced by a nonuniform magnetic field. The numerical results were validated by experimental data from our previous work, indicating a significant increase in mass transfer. The model shows a reasonable agreement with experimental data for the concentration distribution of both magnetic and nonmagnetic species. Magnetoconvective secondary flow enhances the transport of nonmagnetic fluorescent dye. A subsequent parametric analysis investigated the effect of the magnetic field strength and nanoparticle size on the mass transfer process. Mass transport of the fluorescent dye is enhanced with increasing field strength and size of magnetic particles.	en_US
dc.relation.ispartof	Physics of Fluids	en_US
dc.relation.isbasedon	10.1063/1.5093498	en_US
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	Fluids & Plasmas	en_US
dc.title	Modeling of mass transfer enhancement in a magnetofluidic micromixer	en_US
dc.type	Journal Article
utslib.citation.volume	6	en_US
utslib.citation.volume	31	en_US
utslib.for	01 Mathematical Sciences	en_US
utslib.for	02 Physical Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
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 Mechanical and Mechatronic Engineering
utslib.copyright.status	open_access	*
pubs.issue	6	en_US
pubs.publication-status	Published	en_US
pubs.volume	31	en_US

Abstract:

© 2019 Author(s). The use of magnetism for various microfluidic functions such as separation, mixing, and pumping has been attracting great interest from the research community as this concept is simple, effective, and of low cost. Magnetic control avoids common problems of active microfluidic manipulation such as heat, surface charge, and high ionic concentration. The majority of past works on micromagnetofluidic devices were experimental, and a comprehensive numerical model to simulate the fundamental transport phenomena in these devices is still lacking. The present study aims to develop a numerical model to simulate transport phenomena in microfluidic devices with ferrofluid and fluorescent dye induced by a nonuniform magnetic field. The numerical results were validated by experimental data from our previous work, indicating a significant increase in mass transfer. The model shows a reasonable agreement with experimental data for the concentration distribution of both magnetic and nonmagnetic species. Magnetoconvective secondary flow enhances the transport of nonmagnetic fluorescent dye. A subsequent parametric analysis investigated the effect of the magnetic field strength and nanoparticle size on the mass transfer process. Mass transport of the fluorescent dye is enhanced with increasing field strength and size of magnetic particles.

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http://hdl.handle.net/10453/134158