Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/103334
Title: Spreading of a ferrofluid core in three-stream micromixer channels
Authors: Wang, Zhaomeng
Varma, V. B.
Xia, Huan Ming
Wang, Z. P.
Ramanujan, Raju Vijayaraghavan
Keywords: DRNTU::Science::Physics
Issue Date: 2015
Source: Wang, Z., Varma, V. B., Xia, H. M., Wang, Z. P., & Ramanujan, R. V. (2015). Spreading of a ferrofluid core in three-stream micromixer channels. Physics of fluids, 27(5), 052004-.
Series/Report no.: Physics of fluids
Abstract: Spreading of a water based ferrofluid core, cladded by a diamagnetic fluid, in three-stream micromixer channels was studied. This spreading, induced by an external magnetic field, is known as magnetofluidic spreading (MFS). MFS is useful for various novel applications where control of fluid-fluid interface is desired, such as micromixers or micro-chemical reactors. However, fundamental aspects of MFS are still unclear, and a model without correction factors is lacking. Hence, in this work, both experimental and numerical analyses were undertaken to study MFS. We show that MFS increased for higher applied magnetic fields, slower flow speed of both fluids, smaller flow rate of ferrofluid relative to cladding, and higher initial magnetic particle concentration. Spreading, mainly due to connective diffusion, was observed mostly near the channel walls. Our multi-physics model, which combines magnetic and fluidic analyses, showed, for the first time, excellent agreement between theory and experiment. These results can be useful for lab-on-a-chip devices.
URI: https://hdl.handle.net/10356/103334
http://hdl.handle.net/10220/25806
DOI: 10.1063/1.4919927
Schools: School of Materials Science & Engineering 
Organisations: A*STAR SIMTech
Rights: © 2015 AIP Publishing LLC. This paper was published in Physics of Fluids and is made available as an electronic reprint (preprint) with permission of AIP Publishing LLC. The paper can be found at the following official DOI: [http://dx.doi.org/10.1063/1.4919927]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles
SIMTech Journal Articles

Files in This Item:
File Description SizeFormat 
Spreading of a ferrofluid core in three-stream micromixer channels.pdf5.92 MBAdobe PDFThumbnail
View/Open

SCOPUSTM   
Citations 20

27
Updated on Mar 23, 2024

Web of ScienceTM
Citations 10

27
Updated on Oct 25, 2023

Page view(s) 20

757
Updated on Mar 28, 2024

Download(s) 10

370
Updated on Mar 28, 2024

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.