Numerical simulation on behavior of liquid jet issued into air flow

Takao Inamura, Takehito Tsutagawa, Seong Jin Cho, Goro Masuya

Research output: Contribution to journalArticle

Abstract

The numerical simulations have been performed to clarify the effects of the turbulence in the liquid on the deformation of liquid jet surface issued into the air flow. The turbulences in the liquid jet were simulated by the Rankin vortices, and the liquid jet surface was tracked numerically by the VOF (Volume Of Fluid) method. By the numerical simulations, the onset of the protrusions on the liquid jet surface is caused by the vortices in the liquid, and the surrounding air flow plays the important role for the amplification of the protrusions. The amplification rate of the trough displacement is proportinal to the air-to-liquid velocity ratio. At large imposed vortex intensity, the trough displacement increases with the vortex intensity. On the other hand, at small imposed vortex intensity, the amplification of the trough displacement is affected by other factors except vortex intensity.

Original languageEnglish
Pages (from-to)2113-2118
Number of pages6
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume65
Issue number634
DOIs
Publication statusPublished - 1999 Jan 1

Keywords

  • Disintegration mechanism
  • Instability
  • Liquid jet
  • Numerical simulation
  • Rocket injector
  • Twin-fluid atomization

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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