Suscripción a Biblioteca: Guest
Portal Digitalde Biblioteca Digital eLibros Revistas Referencias y Libros de Ponencias Colecciones
Atomization and Sprays
Factor de Impacto: 1.262 Factor de Impacto de 5 años: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

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

Volumes:
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.v11.i1.20
pages 21-33

THE INFLUENCE OF ECCENTRICITY ON THE PERFORMANCE OF A COAXIAL PREFILMING AIR-ASSIST ATOMIZER

Andreas Glathe
Institut fur Fluidmechanik und Fluidenergiemaschinen, Technische Universitat Bergakademie Freiberg, Freiberg, Germany
Gunter Wozniak
Institut fur Fluidmechanik und Fluidenergiemaschinen, Technische Universitat Bergakademie Freiberg, Freiberg, Germany
Thomas Richter
Ing.-Buro fur Zerstaubungstechnik Richter, Haltern, Germany

SINOPSIS

This article presents an experimental analysis of spray development, spray tip penetration, and the macroscopic characteristics of a high-pressure gasoline injector for direct-injected gasoline engine applications. Also, this study deals with microscopic characteristics of the fuel spray, such as mean droplet size, mean velocity, and the instantaneous velocity vector fields in the fuel spray of a high-pressure injector. The spray development, spray penetration, and global spray structure were visualized using a shadowgraph technique. Atomization characteristics of the fuel spray such as mean droplet sizes and mean velocities were measured using the phase Doppler particle analyzer system. In addition, instantaneous velocity vector fields of the fuel spray with time after injection were obtained from cross-correlation particle image velocimetry.
The experimental results obtained provide the effect of injection pressure on the spray behaviors, spray structure, microscopic characteristics of the fuel spray, and the velocity vector fields at different moments after the start of injection. The injection pressure of the fuel is an important factor, which has an effect on the spray development processes involving the spray tip penetration, spray width, and mixing of fuel droplets and ambient air. With an increase in fuel injection pressure, the droplet size decreases, and the location of maximum droplet size appears farther downstream than in the case of low injection pressure. The results of spray visualization show that the counter rotating vortex along the outer edge of the spray surface is observed at a later stage of fuel injection, and it continues until right after the end of fuel injection. The velocity vector fields by particle image velocimetry show detailed flow vectors and spray development processes in the fuel sprays at different elapsed times after the start of injection.


Articles with similar content:

SPRAY STRUCTURE AND CHARACTERISTICS OF HIGH-PRESSURE GASOLINE INJECTORS FOR DIRECT-INJECTION ENGINE APPLICATIONS
Atomization and Sprays, Vol.11, 2001, issue 1
Chang Sik Lee, Dae Sik Kim, Mun Soo Chon
Characterization of Direct-Injection Gasoline Sprays under Different Ambient and Fuel Injection Conditions
International Journal of Fluid Mechanics Research, Vol.24, 1997, issue 4-6
J.-H. Yoo, Fu-Quan Zhao, K.-S. Lee, Ming Chia Lai, Y. Liu
STEREOSCOPIC IMAGING OF TRANSVERSE DETONATIONS IN DIFFRACTION
Journal of Flow Visualization and Image Processing, Vol.14, 2007, issue 1
F. Pintgen, J. E. Shepherd
VISUALIZATION OF INTERACTING PILOT AND MAIN DIESEL-TYPE SPRAYS IN AN ENGINE
Journal of Flow Visualization and Image Processing, Vol.2, 1995, issue 1
D. Pushka, B. Chehroudi, K. M. Sinko
AN EXPERIMENTAL STUDY ON GASOLINE DIRECT-INJECTION SPRAY AND ATOMIZATION CHARACTERISTICS OF ALCOHOL FUELS AND ISOOCTANE
Atomization and Sprays, Vol.21, 2011, issue 5
Himesh Patel, Shanshan Yao, Ji Zhang, Tiegang Fang