Fluid mixing in droplet-based microfluidics with a serpentine microchannel

Wang, Jiajun, Wang, Jianan, Feng, Lianfang and Lin, Tong 2015, Fluid mixing in droplet-based microfluidics with a serpentine microchannel, RSC advances, vol. 5, no. 126, pp. 104138-104144, doi: 10.1039/c5ra21181f.

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Title Fluid mixing in droplet-based microfluidics with a serpentine microchannel
Author(s) Wang, Jiajun
Wang, Jianan
Feng, Lianfang
Lin, TongORCID iD for Lin, Tong orcid.org/0000-0002-1003-0671
Journal name RSC advances
Volume number 5
Issue number 126
Start page 104138
End page 104144
Total pages 7
Publisher Royal Society of Chemistry
Place of publication Cambridge, Eng.
Publication date 2015
ISSN 2046-2069
Keyword(s) Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry
CHANNELS
FLOWS
MIXER
CHIP
Summary The hydrodynamics and mixing process within droplets travelling along a three dimensional serpentine microchannel are studied using a computational fluid dynamics simulation based on the volume-of-fluid approach. The fluid mixing within the droplet follows symmetric circulations in the straight section, which generates axial mixing. In the winding section, the asymmetric circulations lead to the reorientation of the fluids within the droplet, thus enhancing the mixing efficiency. The mixing performance is controlled by the spatial distribution of the mixing components and the circulation period within the droplet. The best mixing occurs when the droplet size is comparable with the channel width. When the droplet size is less than two times the channel width, the asymmetric circulations make it easy for the fluid to distribute in the axial direction, which leads to a fast mixing process. For larger droplets, the long circulation period becomes more significant, which causes lower mixing efficiency.
Language eng
DOI 10.1039/c5ra21181f
Field of Research 090403 Chemical Engineering Design
Socio Economic Objective 860699 Industrial Chemicals and Related Products not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30082368

Document type: Journal Article
Collection: Institute for Frontier Materials
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