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Atomization and Sprays

Journal of the International Institutes for Liquid Atomization and Spray Systems

ISSN for PRINT: 1045-5110

Institutional price:	$787.00
Issues per year:	8

Best Paper Award Selection - Editorial Board Site

2002, Volume12

204 pages

Issue price - $75.00

BREAKUP TRANSITIONS WITHIN DENSE SPRAYS

Corinne S. Lengsfeld
Department of Engineering, University of Denver, 2390 South York Street, Denver, CO 80208, USA

Jean-Pierre Delplanque
Colorado School of Mines, Division of Engineering, Golden, Colorado 80401

Derek Dunn-Rankin
Department of Mechanical and Aerospace Engineering, University of California, Irvine, CA 92697, USA

ABSTRACT

This study evaluates the influence of neighbor—induced changes to the local environment of a droplet in a dense spray on the droplet breakup regime. To this end, previously published breakup data exhibiting a mismatch between the expected isolated droplet breakup transitions and the observed breakup transitions within dense spray environments are re-examined. We find that secondary breakup of droplets within a dense spray is adequately described by the criteria developed for isolated droplets if neighbor—induced changes to the local environment (increase in local vapor concentration, drag reduction caused by leading droplets, and surface tension variation with liquid—gas density ratio) are correctly taken into account when evaluating the criteria for breakup regime transitions.