Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Atomization and Sprays
Fator do impacto: 1.262 FI de cinco anos: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Imprimir: 1044-5110
ISSN On-line: 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.2015013216
pages 755-773

TIME-RESOLVED CHARACTERIZATION OF LOW-PRESSURE PULSED INJECTOR

Rohit Singh Pathania
Department of Mechanical Engineering, National Centre for Combustion Research and Development, Indian Institute of Technology Madras, Chennai 600036, India
Satyanarayanan R. Chakravarthy
Department of Aerospace Engineering, National Centre for Combustion Research and Development, Indian Institute of Technology Madras, Chennai 600036, India
Pramod S. Mehta
Department of Mechanical Engineering, National Centre for Combustion Research and Development, Indian Institute of Technology Madras, Chennai 600036, India

RESUMO

This study concerns visualization of pulsed sprays of a gasoline port fuel injector under ambient conditions. One-, two-, and four-hole configurations all with the same hole diameter are compared. The investigations on the two-hole configuration include adjacent and diagonal holes. The instantaneous penetration length, the jet breakup length, cone angle, and the droplet diameter distributions are evaluated along the spray axis at different injection pressures. As the spray penetration evolves, the liquid jet breaks up some time later, and reaches a nearly constant breakup length throughout the subsequent development of the spray. Unlike the single-hole spray, the two-hole spray exhibits a mild increase in the breakup length with increase in the injection pressure. The breakup length with the diagonal two-hole configuration is much shorter than with the adjacent one. The diagonal two-hole configuration exhibits a high cone angle relative to two-hole and four-hole cases. In all the cases, the mean droplet size decreases with injection pressure and remains nearly constant in time at any axial location. While the single-hole and adjacent two-hole injectors indicate coalescence of droplets, the diagonal two-hole case shows a decrease in the Sauter mean diameter of the droplets with axial distance. The four-hole injector produces nearly constant droplet size. The shorter breakup length, higher spread, and smaller droplet sizes in the two-hole diagonal configuration support an enhanced entrainment of ambient air as compared to the two-hole adjacent and four-hole injector configurations.


Articles with similar content:

EFFECT OF RECESS LENGTH ON THE SPRAY CHARACTERISTICS OF LIQUID-CENTERED SWIRL COAXIAL INJECTORS
Atomization and Sprays, Vol.26, 2016, issue 6
Peng Cheng, Qinglian Li, Zhongtao Kang, Xinqiao Zhang
EFFECT OF SPLIT INJECTION ON THE MACROSCOPIC DEVELOPMENT AND ATOMIZATION CHARACTERISTICS OF A DIESEL SPRAY INJECTED THROUGH A COMMON-RAIL SYSTEM
Atomization and Sprays, Vol.16, 2006, issue 5
Rolf D. Reitz, Chang Sik Lee, Sungwook Park
CHARACTERIZATION OF INITIAL SPRAY FROM A D.I. GASOLINE INJECTOR BY HOLOGRAPHY AND LASER DIFFRACTION METHOD
Atomization and Sprays, Vol.14, 2004, issue 5
Keiya Nishida, Hiroyuki Hiroyasu, Tie Li
REVIEW OF FUEL SPRAY DISTRIBUTIONS TO PREDICT PERFORMANCE OF ROTARY ATOMIZERS IN A SLINGER GAS TURBINE COMBUSTOR
Atomization and Sprays, Vol.26, 2016, issue 5
Bernard Paquet, Alain de Champlain, Small Kalla
A COMPARISON OF SPRAY CHARACTERISTICS BETWEEN AN AIR-ASSISTED FUEL INJECTOR AND A HIGH-PRESSURE SWIRL INJECTOR FOR GASOLINE DIRECT-INJECTION ENGINE APPLICATION
Atomization and Sprays, Vol.12, 2002, issue 1-3
C. Jang