Tuning the Splitting Behavior of Droplet in a Bifurcating Channel through Wettability-Capillarity Interaction

We present a comprehensive computational physics-based study of the influence of surface wettability on the displacement behavior of a droplet in a three-dimensional bifurcating channel. Various surface wettability configurations for the daughter branches are considered to gain insight into the wett...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1985. - 36(2020), 35 vom: 08. Sept., Seite 10471-10489
1. Verfasser: Deka, Dhrijit Kumar (VerfasserIn)
Weitere Verfasser: Boruah, Manash Protim, Pati, Sukumar, Randive, Pitambar R, Mukherjee, Partha P
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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520 |a We present a comprehensive computational physics-based study of the influence of surface wettability on the displacement behavior of a droplet in a three-dimensional bifurcating channel. Various surface wettability configurations for the daughter branches are considered to gain insight into the wettability-capillarity interaction. Also, the influence of initial droplet size on the splitting dynamics for different wettability configurations is investigated. Time evolution of the droplet displacement behavior in the bifurcating channel is discussed for different physicochemical parameters including capillary number and wettability. Three distinct flow regimes are identified as the droplet interacts with the bifurcating tip of the channel, namely, splitting, nonsplitting, and oscillating regimes. Furthermore, the occurrence of Rayleigh-Plateau instability in different wettability scenarios is discussed. Additionally, the intricacies associated with the droplet dynamics are elucidated through the temporal evolution of the droplet surface area and mass outflow of the continuous phase. A flow regime map based on the capillary number and wettability contrast of the daughter branches is proposed for a comprehensive description of the droplet dynamics 
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700 1 |a Boruah, Manash Protim  |e verfasserin  |4 aut 
700 1 |a Pati, Sukumar  |e verfasserin  |4 aut 
700 1 |a Randive, Pitambar R  |e verfasserin  |4 aut 
700 1 |a Mukherjee, Partha P  |e verfasserin  |4 aut 
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