CONCENTRATION MEASUREMENTS IN A SELF-EXCITED JET

Authors
RICHARDS CD BREUEL BD CLARK RP TROUTT TR
Citation
Cd. Richards et al., CONCENTRATION MEASUREMENTS IN A SELF-EXCITED JET, Experiments in fluids, 21(2), 1996, pp. 103-109
Citations number
19
Categorie Soggetti
Mechanics,"Engineering, Mechanical
Journal title
Experiments in fluids → ACNP
ISSN journal
07234864
Volume
21
Issue
2
Year of publication
1996
Pages
103 - 109
Database
ISI
SICI code
0723-4864(1996)21:2<103:CMIASJ>2.0.ZU;2-8
Abstract
The near field of helium-air jets exhausting into an air environment h as been experimentally investigated using an aspiration probe and flow visualization. lets with varying density ratios and Reynolds numbers were studied. Pure helium jets with density ratios of 0.14 were found to display a self-excited behavior characterized by intense mixing. Th e centerline concentration decay was found to be substantially increas ed for the self-excited jet. Flow visualization revealed the expulsion of side jets from the potential core region of low density jets. Radi al profiles of concentration provide additional evidence that side-jet s produce vigorous mixing.