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Impact of a microfluidic jet on a pendant droplet
Name
d1sm00706h.pdf
Description
Published version
Size
7.05 MB
Format
Adobe PDF
Checksum (MD5)
5ebea0dacd07fdbc1ec27a96b783edb1
Author(s)
Quetzeri-Santiago, Miguel A
Hunter, Ian W
van der Meer, Devaraj
Fernandez Rivas, David
Date Issued
2021
Journal
Soft Matter
Publisher
Royal Society of Chemistry (RSC)
Citation
Quetzeri-Santiago, Miguel A, Hunter, Ian W, van der Meer, Devaraj and Fernandez Rivas, David. 2021. "Impact of a microfluidic jet on a pendant droplet." Soft Matter, 17 (32).
Version
Final published version
Abstract
High speed microfluidic jets can be generated by a thermocavitation process: from the evaporation of the liquid inside a microfluidic channel, a rapidly expanding bubble is formed and generates a jet through a flow focusing effect. Here, we study the impact and traversing of such jets on a pendant liquid droplet. Upon impact, an expanding cavity is created, and, above a critical impact velocity, the jet traverses the entire droplet. We predict the critical traversing velocity (i) from a simple energy balance and (ii) by comparing the Young–Laplace and dynamic pressures in the cavity that is created during the impact. We contrast the model predictions against experiments, in which we vary the liquid properties of the pendant droplet and find good agreement. In addition, we assess how surfactants and viscoelastic effects influence the critical impact velocity. Our results increase the knowledge of the jet interaction with materials of well-known physical properties.
Terms of Use
Creative Commons Attribution 3.0 unported license
Persistent DSpace Link
DOI of Published Version
10.1039/D1SM00706H
