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.v6.i3.30
pages 285-304

COMPARATIVE STUDY OF TWIN-FLUID ATOMIZATION USING SONIC OR SUPERSONIC GAS JETS

Byung Kyu Park
School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea
Joon Sik Lee
School of Mechanical and Aerospace Engineering, Seoul National University, San 56-1. Sillim-dong Gwanak-gu. Seoul 151-742 Korea
Kenneth D. Kihm
Texas A&M University College Station, TX; and Micro/Nano-Scale Fluidics and Energy Transport Laboratory, University of Tennessee, Mechanical, Aerospace and Biomedical Engineering Department, Knoxville TN 37996-2210, USA

RÉSUMÉ

To examine the effect of sonic and supersonic gas jets on twin-fluid atomization, a comparative study has been done for two different types of atomizers, using (1) an underexpanded sonic nitrogen gas jet from a converging nozzle (SN type), and (2) an overexpanded supersonic nitrogen gas jet from a converging-diverging nozzle (CD type, with an area ratio of 3). Water is used as the atomized liquid injected through a center orifice. The Malvern diffraction sizer measured the spray Sauter mean diameter (SMD) distributions on a line-of-sight basis and a tomographic transformation of the data found the radial distribution of drop SMDs. A Buckingham-PI dimensional analysis provided an experimental correlation of the spray SMD with the radial and axial location, liquid mass flux, and the gas jet stagnation pressure. The SMD correlation showed small distinctions (approximately 7.5%) between the two different nozzle types when other injection conditions remained fixed. The stagnation pressure showed a dominance over the nozzle configuration (SN or CD type) in determining atomization. Also, a modified energy model analysis provided a single correlation for spatially averaged SMDs for both SN- and CD-type nozzles. The stagnation pressure again played a dominant role when correlating the spatially averaged drop SMDs.


Articles with similar content:

EFFERVESCENT ATOMIZER OPERATION AND SPRAY CHARACTERISTICS
Atomization and Sprays, Vol.3, 1993, issue 2
J. D. Whitlow, Arthur H. Lefebvre
Spray Trajectories of Liquid Fuel Jets in Subsonic Crossflows
International Journal of Fluid Mechanics Research, Vol.24, 1997, issue 1-3
R. P. Fuller, P.-K. Wu, K. A. Kirkendall, A. S. Nejad, M. R. Gruber
DROPLET SIZE AND VELOCITY MEASUREMENTS IN A CRYOGENIC JET FLAME OF A ROCKET-TYPE COMBUSTOR USING HIGH-SPEED IMAGING
Atomization and Sprays, Vol.26, 2016, issue 5
Yves Le Sant, Arnaud Ristori, Lucien Vingert, Nicolas Fdida
STRUCTURE OF A NONEVAPORATING SWIRL INJECTOR SPRAY
Atomization and Sprays, Vol.7, 1997, issue 1
Richard Eskridge, Douglas A. Feikema, John J. Hurt
SINGLE-FLUID AND DUAL-FLUID ATOMIZATION METHODS: LOCAL AND GLOBAL SPRAY QUANTITIES
Atomization and Sprays, Vol.17, 2007, issue 2
Holger Lienemann, Julian T. Kashdan, John S. Shrimpton