Physics of Fluids - Publications

Impact of a microfluidic jet onto a pendant droplet

arΧiv
Soft Matter 17, 7466–7475 (2021)

Authors

	Miguel Angel Quetzeri-Santiago
	I. Hunter
	Devaraj van der Meer
	David Fernández Rivas

BibTeΧ

@Article{D1SM00706H,
author ="Quetzeri-Santiago, Miguel Angel and Hunter, Ian and van der Meer, Devaraj and Fernandez Rivas, David",
title  ="Impact of a microfluidic jet onto a pendant droplet",
journal  ="Soft Matter",
year  ="2021",
pages  ="-",
publisher  ="The Royal Society of Chemistry",
doi  ="10.1039/D1SM00706H",
url  ="http://dx.doi.org/10.1039/D1SM00706H",
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 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 asses 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."}