A nonlinear atomization model based on a boundary layer instability mechanism

Suk Goo Yoon, Stephen D. Heister

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

An axisymmetric boundary element method has been used to simulate primary atomization of a liquid jet including the effects of the orifice passage geometry. A ring vortex is placed at the orifice exit plane; its strength and location are uniquely determined by the local boundary layer characteristics at this locale. Using this methodology, nonlinear simulations are performed that include hundreds of individual atomization events. A linear analysis due to Ponstein is used to estimate the number of droplets formed from individual rings of fluid which are pinched from the periphery of the jet. Numerous results have been obtained to assess the effects of fluid parameters and orifice design on droplet sizes and atomization characteristics. Predicted droplet sizes show agreement with some limited experimental data.

Original languageEnglish
Pages (from-to)47-61
Number of pages15
JournalPhysics of Fluids
Volume16
Issue number1
DOIs
Publication statusPublished - 2004 Jan 1
Externally publishedYes

Fingerprint

atomizing
orifices
Atomization
Orifices
boundary layers
Boundary layers
vortex rings
Fluids
fluids
boundary element method
Boundary element method
Vortex flow
methodology
Geometry
rings
Liquids
estimates
liquids
geometry
simulation

ASJC Scopus subject areas

  • Mechanics of Materials
  • Computational Mechanics
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes
  • Condensed Matter Physics

Cite this

A nonlinear atomization model based on a boundary layer instability mechanism. / Yoon, Suk Goo; Heister, Stephen D.

In: Physics of Fluids, Vol. 16, No. 1, 01.01.2004, p. 47-61.

Research output: Contribution to journalArticle

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