A fully non-linear model for atomization of high-speed jets

Suk Goo Yoon, Stephen D. Heister

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A non-linear model has been developed to assess the time evolution of an axisymmetric liquid jet using a boundary-element method. Vorticity transported from the boundary layer in the orifice passage to the free surface is modeled using a potential ring vortex placed at the orifice exit plane. The vortex strength is uniquely determined from the Kutta condition and information regarding the boundary layer thickness at the orifice exit plane. It is shown that primary breakup can occur even in the absence of the gas phase. Using a secondary stability analysis after Ponstein [Appl. Scientific Res. 8 (1959) 425], the size of the droplets is estimated based on the size of the ring-type structures shed from the periphery of the jet. Computed droplet sizes are in reasonable agreement with experimental data, although turbulence effects obscure some comparisons.

Original languageEnglish
Pages (from-to)345-357
Number of pages13
JournalEngineering Analysis with Boundary Elements
Volume28
Issue number4
DOIs
Publication statusPublished - 2004 Apr 1
Externally publishedYes

Fingerprint

Atomization
Fully Nonlinear
Orifices
Nonlinear Model
High Speed
Droplet
Boundary Layer
Boundary layers
Vortex flow
Vortex Ring
Breakup
Boundary element method
Vorticity
Free Surface
Boundary Elements
Vortex
Stability Analysis
Turbulence
Experimental Data
Liquid

Keywords

  • Atomization
  • Jet
  • Vortex-ring

ASJC Scopus subject areas

  • Computer Science Applications
  • Computational Mechanics

Cite this

A fully non-linear model for atomization of high-speed jets. / Yoon, Suk Goo; Heister, Stephen D.

In: Engineering Analysis with Boundary Elements, Vol. 28, No. 4, 01.04.2004, p. 345-357.

Research output: Contribution to journalArticle

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