Breakup of inviscid compound liquid jets falling under gravity

J. Uddin, S. P. Decent

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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.

    Original languageEnglish
    Article number485501
    Pages (from-to)-
    Number of pages12
    JournalJournal of Physics A: Mathematical and Theoretical
    Volume43
    Issue number48
    DOIs
    Publication statusPublished - 3 Dec 2010

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