Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
Atomization and Sprays
Facteur d'impact: 1.262 Facteur d'impact sur 5 ans: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Imprimer: 1044-5110
ISSN En ligne: 1936-2684

Volumes:
Volume 29, 2019 Volume 28, 2018 Volume 27, 2017 Volume 26, 2016 Volume 25, 2015 Volume 24, 2014 Volume 23, 2013 Volume 22, 2012 Volume 21, 2011 Volume 20, 2010 Volume 19, 2009 Volume 18, 2008 Volume 17, 2007 Volume 16, 2006 Volume 15, 2005 Volume 14, 2004 Volume 13, 2003 Volume 12, 2002 Volume 11, 2001 Volume 10, 2000 Volume 9, 1999 Volume 8, 1998 Volume 7, 1997 Volume 6, 1996 Volume 5, 1995 Volume 4, 1994 Volume 3, 1993 Volume 2, 1992 Volume 1, 1991

Atomization and Sprays

DOI: 10.1615/AtomizSpr.v7.i2.20
pages 123-142

HOLOGRAPHIC INVESTIGATION OF THE EFFECT OF ELEVATED AMBIENT TEMPERATURE ON THE ATOMIZATION CHARACTERISTICS OF IMPINGING JET SPRAYS

Y. Shen
Department of Mechanical Engineering, University of Illinois at Chicago, Chicago, IL 60607
C. Mitts
Department of Mechanical Engineering, University of Illinois at Chicago, Chicago, IL 60607
Dimos Poulikakos
Laboratory of Thermodynamics in Emerging Technologies, Institute of Energy Technology Mechanical and Process Engineering Department, ETH Zurich, Switzerland

RÉSUMÉ

A study of impinging jet sprays formed by a pair of 0.8-mm jets impinging at an angle of 90 ° at ambient temperatures from 25 to 250 °C has been conducted using a double-pulse, two-reference-beam holographic technique. The working fluids utilized were water, a 59 wt% aqueous glycerol solution, and ethanol. Velocity measurements and drop size distributions were obtained for various regions of the spray, and the universal root-normal distribution was used as a representation of the cumulative volume distributions. Generally, the qualitative nature of the spray pattern remained the same as temperature increased, but the size of the resulting droplets decreased as a result of evaporation and increased instabilities. Furthermore, the wave structure, which is characteristic of a fully developed impinging jet spray, became less distinct as temperature increased. The average velocity of the particles within a 20 ° envelope of the spray centerline in the dense region was approximately equal to the mean jet velocity. At downstream locations, the average droplet velocity decreased to approximately 65% of the mean jet velocity. In addition to the data obtained, the advantages of using double-pulse holography are highlighted. Namely, spatial and temporal aspects of the entire spray can be obtained simultaneously. This is a powerful feature, especially in light of the ability of holography to be used to analyze dense regions of a spray.


Articles with similar content:

EFFECTS OF IMPINGEMENT CONDITIONS ON THE CHARACTERISTICS OF MUTUAL IMPINGING SPRAY
Atomization and Sprays, Vol.17, 2007, issue 2
Gwon Hyun Ko, Hong Sun Ryou
MEASUREMENTS AND PREDICTIONS OF A LIQUID SPRAY FROM AN AIR-ASSIST NOZZLE
Atomization and Sprays, Vol.2, 1992, issue 4
Daniel L. Bulzan, Yeshayahou Levy, Suresh Aggarwal, Susheel Chitre
EXPERIMENTAL INVESTIGATION OF THE ATOMIZATION CHARACTERISTICS OF ANTICORROSION WAX
Atomization and Sprays, Vol.23, 2013, issue 7
Sanghoon Lee, Sungwook Park
2-D LASER SHEET VISUALIZATION OF A PULSED HOLLOW CONE SPRAY: STAGNANT AND SIMULATED TWO-STROKE ENGINE ENVIRONMENTS
Atomization and Sprays, Vol.1, 1991, issue 1
Douglas Talley, M. Morris, Y. C. Lin
AIR FLOW AND DROPLET MOTIONS PRODUCED BY THE INTERACTION OF FLAT-FAN SPRAYS AND CROSS FLOWS
Atomization and Sprays, Vol.10, 2000, issue 1
J. C. Phillips, N. H. Thomas, P. C. H. Miller