In this paper, the asymmetric breakup dynamics of a solitary water droplet through a Y-junction microchannel with a non-uniform outlet flow rate is numerically investigated under a spacious range of capillary number (0.01 < Ca < 0.3), outlet flow rate ratio (1 < λ < 11), and initial droplet volume (0.7 < V* < 4.0). Four distinct breakup patterns, namely, Obstructed–Obstructed breakup, Obstructed–Tunnel breakup, Tunnel–Tunnel breakup, and Non-breakup, are recognized. The quantitative impacts of the significant parameters on the breakup characteristics are determined, and the breakup threshold is predicted using the correlations. As per the results, the evolution of neck thickness is significantly influenced by the outlet flow rate ratio and capillary number but is less dependent on the initial droplet volume. A series of functional correlations are proposed under various Ca and V* values to describe the variation in the splitting ratio of offspring droplets based on the exponential law.
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April 2023
Research Article|
April 26 2023
Asymmetric breakup of a single droplet through a Y-junction microchannel with non-uniform flow rate
Li Shanshan (李姗姗);
Li Shanshan (李姗姗)
(Conceptualization, Data curation, Investigation, Methodology, Software, Writing – original draft, Writing – review & editing)
School of Perfume & Aroma and Cosmetics, Shanghai Institute of Technology
, Shanghai 201418, People's Republic of China
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Wen Lin (文琳);
Wen Lin (文琳)
(Conceptualization, Data curation, Investigation, Methodology, Software, Writing – original draft, Writing – review & editing)
School of Perfume & Aroma and Cosmetics, Shanghai Institute of Technology
, Shanghai 201418, People's Republic of China
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Wang Wei (王伟)
Wang Wei (王伟)
a)
(Conceptualization, Data curation, Funding acquisition, Methodology, Supervision, Writing – original draft, Writing – review & editing)
School of Perfume & Aroma and Cosmetics, Shanghai Institute of Technology
, Shanghai 201418, People's Republic of China
a)Author to whom correspondence should be addressed: [email protected]
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a)Author to whom correspondence should be addressed: [email protected]
Physics of Fluids 35, 042015 (2023)
Article history
Received:
January 12 2023
Accepted:
March 20 2023
Citation
Shanshan Li, Lin Wen, Wei Wang; Asymmetric breakup of a single droplet through a Y-junction microchannel with non-uniform flow rate. Physics of Fluids 1 April 2023; 35 (4): 042015. https://doi.org/10.1063/5.0142244
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Alan Jeffrey Giacomin
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