A nonlinear atomization model based on a boundary layer instability mechanism

Sam S. Yoon; Stephen D. Heister

doi:10.1063/1.1629301

A nonlinear atomization model based on a boundary layer instability mechanism

Sam S. Yoon, Stephen D. Heister

Research output: Contribution to journal › Article › peer-review

40 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 language	English
Pages (from-to)	47-61
Number of pages	15
Journal	Physics of Fluids
Volume	16
Issue number	1
DOIs	https://doi.org/10.1063/1.1629301
Publication status	Published - 2004 Jan
Externally published	Yes

ASJC Scopus subject areas

Computational Mechanics
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1063/1.1629301

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A nonlinear atomization model based on a boundary layer instability mechanism

Abstract

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