Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
Atomization and Sprays
IF: 1.262 5-Year IF: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Print: 1044-5110
ISSN Online: 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.2012004415
pages 1009-1031

STEADY AND TRANSIENT DROPLET DISPERSION IN AN AIR-ASSIST INTERNALLY MIXING CONE ATOMIZER

Amir Abbas Aliabadi
Department of Mechanical Engineering, University of British Columbia, 3321−2260 West Mall, Vancouver, British Columbia, V6T1Z4, Canada
Kelly W. J. Lim
Department of Mechanical Engineering, University of British Columbia, 3321−2260 West Mall, Vancouver, British Columbia, V6T1Z4, Canada
Steven N. Rogak
Department of Mechanical Engineering, University of British Columbia, 3321−2260 West Mall, Vancouver, British Columbia, V6T1Z4, Canada
Sheldon I. Green
Department of Mechanical Engineering, University of British Columbia, 3321−2260 West Mall, Vancouver, British Columbia, V6T1Z4, Canada

ABSTRACT

Droplet dispersion for steady and transient sprays produced by an air-assist internally mixing cone atomizer is studied using high-speed laser imaging, shadowgraphy, and particle tracking velocimetry (PTV). For this spray, large droplets form close to the periphery while small droplets form close to the centerline. Radial dispersion of droplets is a function of droplet relaxation time and fluctuating flow characteristic times so that small droplets disperse more effectively in the radial direction than large droplets due to turbulent diffusion. For the transient spray, the overall axial and radial penetration of the spray is self-preserving and similar to penetration of starting continuous phase jets. Axial dispersion of droplets is a function of droplet relaxation time and the mean flow characteristic time. The leading edge of the spray exhibits higher turbulence than the trailing edge, which is characterized by very large eddies and smaller Reynolds numbers. The dispersion behavior at far-field away from the breakup region is expected to be similar for many dilute air-assist, internally mixing round sprays.


Articles with similar content:

TURBULENCE DECAY IN LIQUID JETS
ICLASS 94
Proceedings of the Sixth International Conference on Liquid Atomization and Spray Systems, Vol.0, 1994, issue
Norman Chigier, Adel Mansour
SPATIAL DROP BEHAVIOR OF A ROTARY ATOMIZER IN A CROSS FLOW
Atomization and Sprays, Vol.22, 2012, issue 12
Han Jin Jeong, Andrew Corber, Sangsig Yun, Seong Man Choi
LIQUID CORE STRUCTURE OF PRESSURE-ATOMIZED SPRAYS VIA LASER TOMOGRAPHIC IMAGING
Atomization and Sprays, Vol.6, 1996, issue 1
A. Mitrovic, T.-W. Lee
INFLUENCES OF INJECTION PARAMETERS ON TWIN-FLUID DISINTEGRATION OF LIQUID JET
ICLASS 94
Proceedings of the Sixth International Conference on Liquid Atomization and Spray Systems, Vol.0, 1994, issue
T. Inamura, Y.S. Kim, Nobuki Nagai
LARGE EDDY SIMULATION OF HIGH GAS DENSITY EFFECTS IN FUEL SPRAYS
Atomization and Sprays, Vol.23, 2013, issue 4
Martti Larmi, M. Nuutinen, Ossi Kaario, K. Keskinen, Tuomo Hulkkonen, Ville Vuorinen, Franz X. Tanner