Author(s)

H.O. Haraldsson, I.V. Kazachkov, T.N. Dinh and B.R. Sehgal

Abstract

A linear stability analysis is employed to investigate bending instability behaviour of a cylindrical jet penetrating into a fluid pool. The density ratio between the jet and ambient fluid and the Froude number are found to be the most important factors contributing to the jet instability. The jet breakup length has been considered as principal parameter of jet instability. The jet breakup length model shows a reasonable agreement with experimental observations. 1. Introduction Instability and breakup of liquid jet penetrating into another fluid has attracted the attention of numerous investigators. A pioneering work was performed by Rayleigh [1], who showed that the jet breakup is generated by hydrodynamic instability. He found that a circul

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