Suscripción a Biblioteca: Guest
Portal Digitalde Biblioteca Digital eLibros Revistas Referencias y Libros de Ponencias Colecciones
Atomization and Sprays
Factor de Impacto: 1.737 Factor de Impacto de 5 años: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN Imprimir: 1044-5110
ISSN En Línea: 1936-2684

Volumes:
Volumen 30, 2020 Volumen 29, 2019 Volumen 28, 2018 Volumen 27, 2017 Volumen 26, 2016 Volumen 25, 2015 Volumen 24, 2014 Volumen 23, 2013 Volumen 22, 2012 Volumen 21, 2011 Volumen 20, 2010 Volumen 19, 2009 Volumen 18, 2008 Volumen 17, 2007 Volumen 16, 2006 Volumen 15, 2005 Volumen 14, 2004 Volumen 13, 2003 Volumen 12, 2002 Volumen 11, 2001 Volumen 10, 2000 Volumen 9, 1999 Volumen 8, 1998 Volumen 7, 1997 Volumen 6, 1996 Volumen 5, 1995 Volumen 4, 1994 Volumen 3, 1993 Volumen 2, 1992 Volumen 1, 1991

Atomization and Sprays

DOI: 10.1615/AtomizSpr.2018027298
pages 901-914

EXPERIMENTAL INVESTIGATION ON NEAR-FIELD BREAKUP CHARACTERISTICS OF HYBRID-MIXED TWIN-FLUID ATOMIZER

Shiyan Li
School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
X. Y. Yang
School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
C. Fu
School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
T. Y. Li
School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Yi Gao
School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

SINOPSIS

Twin-fluid atomizers are widely used in combustion systems, and a hybrid-mixed type that includes both internal and external atomizing air should be a promising twin-fluid atomizer in order to freely control the spray atomization behavior, especially the near-field breakup process. The present work is therefore focused on the near-field breakup characteristics of the liquid jet discharged from a hybrid-mixed twin-fluid atomizer by use of the laser-based high-speed microscopic imaging technique. For the experimental work reported, the liquid injection pressure was fixed at 3.7 bar, and the flow rates of both internal and external mixing air were varied in the range of 0–90 standard liters per minute. Based on the near-field breakup characteristics, including the boundary of the main liquid jet, distribution of disintegrated ligaments/droplets, and near-field droplet characteristics, the influence of atomizing flow rate and external swirl characteristics was investigated. The results show that the flow characteristics of internal/external air would alternatively dominate the flow structure of the main liquid jet and disintegrate parts at specific regions. Besides, the increase of both the internal and external flow rate would greatly enhance the We number of near-field droplets by more than tenfold, and external swirl was also proved to be conducive to the breakup process. Finally, a near-field surface mount device was successfully fitted to the flow rate of internal/external mixing air at both nonswirl and swirl conditions. These results provide important information for understanding and modeling the breakup characteristics of a hybrid-mixed twin-fluid atomizer.


Articles with similar content:

SPRAY EVOLUTION IN A TWIN-FLUID SWIRL ATOMIZER
Atomization and Sprays, Vol.18, 2008, issue 5
J. Karnawat, Abhijit Kushari
EFFECT OF LINEAR ALKANE C17, C18 ON SPRAY CHARACTERISTICS OF KEROSENE IN HOLLOW CONE PRESSURE SWIRL SPRAY
Atomization and Sprays, Vol.27, 2017, issue 6
Haitao Ren, Xiaoyi Yang, Zhiwen Gan
PRIMARY ATOMIZATION AND DROP SIZE CHARACTERISTICS OF AN ELECTROSTATIC DIELECTRIC LIQUID PULSED ATOMIZER
Atomization and Sprays, Vol.22, 2012, issue 4
Agisilaos Kourmatzis, John S. Shrimpton
EFFECT OF NOZZLE DIAMETER ON MACROSCOPIC SPRAY BEHAVIOR OF HEAVY-DUTY DIESEL ENGINE UNDER COLD-START CONDITIONS
Atomization and Sprays, Vol.29, 2019, issue 8
Yang Wu, Lu Zhang, Zhicheng Shi, Fushui Liu, Han Wu, Haiying Li, Chia-Fon Lee
MACROSCOPIC SPRAY CHARACTERISTICS OF A POROUS INJECTOR
Atomization and Sprays, Vol.24, 2014, issue 1
Inchul Lee, Dohun Kim, Jaye Koo