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Multiple Node Breakup of a Liquid Jet Into Drops in Another Immiscible Liquid

[+] Author Affiliations
Shunji Homma, Jiro Koga, Shiro Matsumoto

Saitama University, Saitama, Japan

Grétar Tryggvason

Worcester Polytechnic Institute, Worcester, MA

Paper No. FEDSM2002-31152, pp. 881-886; 6 pages
doi:10.1115/FEDSM2002-31152
From:
  • ASME 2002 Joint U.S.-European Fluids Engineering Division Conference
  • Volume 1: Fora, Parts A and B
  • Montreal, Quebec, Canada, July 14–18, 2002
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3615-0 | eISBN: 0-7918-3600-2
  • Copyright © 2002 by ASME

abstract

We investigate numerically the breakup of an axisymmetric jet into drops in liquid-liquid systems, specifically focus on multiple node breakup, where more than one node of the most unstable wave becomes one drop. The unsteady Navier-Stokes equations for incompressible Newtonian fluids are solved with a Front-Tracking / Finite Difference method. Various combinations of the non-dimensional numbers (Re = 80, 160, 320; We = 5, 8; Fr = 4, 8, 32, ∞) are examined for constant ratios of density (ρc , ρj = 1.25) and viscosity (µc , µj = 1). Capillary waves grow on the jet surface and the multiple node breakup is observed in all cases examined. A “shoulder” is observed on the jet right behind the bulb when the double-node breakup occurs. Unlike the breakup of a jet in air, vortical motions in the external fluid affect the breakup process.

Copyright © 2002 by ASME
Topics: Drops

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