Breakup of inviscid compound liquid jets falling under gravity

Uddin, J. and Decent, S.P. (2010) Breakup of inviscid compound liquid jets falling under gravity. Journal of Physics A: Mathematical and Theoretical, 43 (48): 485501. ISSN 1751-8113

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Abstract

In this paper, we examine the instability of an axisymmetric inviscid compound liquid jet (subject to axisymmetric disturbances) emerging from a concentric tube and falling vertically under the effects of gravity. We formulate the governing equations and then use a slender jet approximation to consider a one-dimensional model of jet breakup. We determine the steady-state solutions of a falling compound jet. We then numerically simulate breakup and droplet formation using an explicit two-step finite difference scheme. The effects of changing the surface tension and density ratio between the inner and outer fluids is investigated, as is the effect of altering the Froude number.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Physics A: Mathematical and Theoretical
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
?? physics and astronomy(all)modelling and simulationmathematical physicsstatistical and nonlinear physicsstatistics and probability ??
Departments:
ID Code:
235011
Deposited By:
Deposited On:
22 Jan 2026 13:45
Refereed?:
Yes
Published?:
Published
Last Modified:
22 Jan 2026 22:45