Dripping to Jetting Transitions in Coflowing Liquid Streams

Andrew S. Utada, Alberto Fernandez-Nieves, Howard A. Stone, and David A. Weitz
Phys. Rev. Lett. 99, 094502 – Published 28 August 2007

Abstract

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.

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  • Received 21 October 2006

DOI:https://doi.org/10.1103/PhysRevLett.99.094502

©2007 American Physical Society

Authors & Affiliations

Andrew S. Utada1, Alberto Fernandez-Nieves1,2, Howard A. Stone1, and David A. Weitz1,3,*

  • 1Harvard School of Engineering and Applied Sciences, Cambridge, Massachusetts 02138, USA
  • 2INEST Group, Philip Morris USA, Richmond, Virginia 23224, USA
  • 3The Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA

  • *weitz@seas.harvard.edu

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Issue

Vol. 99, Iss. 9 — 31 August 2007

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