Characterization of stability regimes of electrohydrodynamically enhanced atomization

Citation
R. Ragucci et al., Characterization of stability regimes of electrohydrodynamically enhanced atomization, EXP THERM F, 21(1-3), 2000, pp. 156-161
Citations number
5
Categorie Soggetti
Mechanical Engineering
Journal title
EXPERIMENTAL THERMAL AND FLUID SCIENCE
ISSN journal
08941777 → ACNP
Volume
21
Issue
1-3
Year of publication
2000
Pages
156 - 161
Database
ISI
SICI code
0894-1777(200003)21:1-3<156:COSROE>2.0.ZU;2-F
Abstract
A comparative analysis of the stability regimes of three different electroh ydrodynamic atomization (electrospray) systems is presented. Availability o f a high resolution imaging system allowed for a direct visualization of th e breakup mechanisms. Both liquid flow rate and applied voltage are varied in a large grid of values in order to build up a database of the observable jet breakup regimes. The exploited conditions have been chosen with the pu rpose of evidencing the relative influences of geometrical, electrical and fluid_dynamical effects at various working conditions. Experimental results shed light on the complex interaction between the controlling parameters a nd resulted in the formulation of some necessary conditions for the occurre nce of stable jet regimes. The final conclusion of the paper is the recogni tion of the actual limitation in the mass Row rate range where such regime can be stabilized. Nevertheless some suggestion comes for the exploitation of atomization condition different from the classical Taylor cone jet that could be successfully exploited either in combustion systems or other techn ological application. (C) 2000 Elsevier Science Inc. All rights reserved.