ITEMS

modern scholarly publishers in the finest tradition

Journals

	Search

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

2001, Volume11

186 pages

Issue price - $75.00

SPRAY EVOLUTION OF A COFLOWING ROUND LIQUID JET IN HIGH-SPEED AIR FLOW

A. P. Johnston
Mechanical and Aerospace Engineering and Engineering Mechanics Department, University of Missouri—Rolla, Rolla, Missouri, USA

K. M. Isaac
Mechanical and Aerospace Engineering and Engineering Mechanics Department, University of Missouri—Rolla, Rolla, Missouri, USA

ABSTRACT

Instantaneous flow visualization was used to study spray evolution in high-speed flow. At very low air velocities, the observed instability of the liquid column agreed qualitatively with numerical simulation of other workers using model eddies. Downstream, a supersonic region with helical instability displaying treelike branches, and a more familiar subsonic region with transverse instability waves, were observed. Apparently, most of the liquid jet was atomized in the upstream, supersonic regions, followed by entrainment of the surrounding air and mixing with it in the subsonic regions.