Numerical simulation on liquid jet behavior issued into still air

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

Research output: Contribution to journalArticlepeer-review

Abstract

Numerical simulations have been conducted to clarify the effects of turbulence, in the onset of protrusions on liquid jet surfaces. The turbulences in the liquid jet were simulated by the Rankin vortices. The liquid jet surface was tracked numerically by the VOF method. From numerical simulations, the protrusions on the liquid jet surface are induced by the vortices in the liquid, whose rotational direction decelerates the jet surface. Despite the distance between vortices, the displacement of the liquid jet surface from the initial surface location increases linearly, in time, at almost the same growth rate. In the initial region, the growth rate of the displacement increases as the major semiaxis-to-minor semiaxis ratio of the ellipsoidal vortex increases. The initial growth rate of displacement is almost proportional to the vortex intensity.

Original languageEnglish
Pages (from-to)141-152
Number of pages12
JournalHeat Transfer - Asian Research
Volume32
Issue number2
DOIs
Publication statusPublished - 2003 Mar 1

Keywords

  • Atomization
  • Disintegration mechanism
  • Instability
  • Liquid jet
  • Numerical simulation
  • Rocket injector

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes

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