Dripping to jetting transitions in coflowing liquid streams.

By A. Utada, A. Fernández-Nieves, Howard A. Stone, David A. Weitz. Physical Review Letters, 2007

819 citations recorded by the source corpus.

A liquid forced through an orifice into an immiscible fluid ultimately breaks into drops due to surface tension. Drop formation can occur right at the orifice in a dripping process. Alternatively, the inner fluid can form a jet, which breaks into drops further downstream. The transition from dripping to jetting is not understood for coflowing fluid streams, unlike the case of drop formation in air. We show that in a coflowing stream this transition can be characterized by a state diagram that depends on the capillary number of the outer fluid and the Weber number of the inner fluid.

Subfields: Biomedical Engineering, Computational Mechanics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/2eb2e0176c805c46bacc2edafbdf049404174a99

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Citations in the corpus

Microfluidic Production of Multiple Emulsions (2017, methodology): “The size of droplets in jetting mode can be calculated using Equation (2) [83]:”
Supercritical microfluidics: Opportunities in flow-through chemistry and materials science (2012, background): “In liquid low pressure microsystems, droplets, jets [53,54] (Fig.”
Highly parallel genome-wide expression profiling of individual cells using nanoliter droplets (2015, methodology): “We designed a microfluidic ‘‘co-flow’’ device (Utada et al., 2007) to co-encapsulate cells with barcoded microparticles (Figures 2A and S2 and Data S1).”
Microfluidic Devices for Drug Delivery Systems and Drug Screening (2018, background): “At high flow rates, the jetting regime is predominant, and droplets form by bre king a thin str am of dispersed phase farther downstr am due to convective instabili i s [44,53].”
Bubble puzzles: From fundamentals to applications (2018, methodology): “[52] A.”
Transition from squeezing to dripping in a microfluidic T-shaped junction (2008, background): “…jetting refers to the formation of long threads prior to formation of a drop, which is usually associated with inertial effects of the internal phase, here we have a case where shear in the external phase drives a jetting transition at low to modest Reynolds numbers (e.g. Utada et al. 2007).”
Mechanism of supercooled droplet freezing on surfaces (2012, background): “The physics of the droplet deformation and necking phenomenon shown in the sequence of Figure 3a can be understood by estimating the relative effect of the various forces acting on the droplet represented by the capillary number, (ratio of the viscous to surface tension forces) and the Weber n”