Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
Atomization and Sprays
Impact-faktor: 1.189 5-jähriger Impact-Faktor: 1.596 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Druckformat: 1044-5110
ISSN Online: 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.2018021190
pages 299-320

EXPERIMENTAL STUDY OF SPRAY BREAKUP PHENOMENA IN SMALL-SCALE SIMPLEX ATOMIZERS WITH AND WITHOUT AIR SWIRL

Muthuselvan Govindaraj
Scientist, NAL, India
Kushal D. Ghate
Mechanical Engineering Department, IIT Madras, Chennai, Tamil Nadu, India
Muralidhara Suryanarayana Rao
Propulsion Division, CSIR–NAL, Bangalore, Karnataka, India
Venkat S. Iyengar
Propulsion Division, CSIR–NAL, Bangalore, Karnataka, India
Sundararajan Thirumalachari
Mechanical Engineering Department, IIT Madras, Chennai, Tamil Nadu, India
Srinivasan Kothandaraman
Mechanical Engineering Department, IIT Madras, Chennai, Tamil Nadu, India

ABSTRAKT

Spray breakup processes of small-scale simplex atomizers have been characterized. With tangential entry of fuel, the cases of no air flow and concentric co-swirl air flow are considered. Ten simplex atomizers with different values of dimensionless tangential port area K have been employed. The breakup mode changes from film breakup to jet breakup, with increase in K value. For small K values, small port area causes high liquid swirl, which aids in the formation of an air core and a hollow cone spray with large cone angle. At high K values, jet breakup gives rise to a full cone spray with a small cone angle. The Sauter Mean Diameter (SMD) for the spray exhibits bimodal variation in the radial direction close to the atomizer. Based on a large volume of data for kerosene and water sprays, accurate correlations (covering wide operating conditions) have been developed for the spray cone angle, Cd, and axial variation of SMD for small-scale simplex atomizers. Swirl air interaction with the liquid film causes a transition from closed tulip shape to an open spray at a critical air flow rate. The critical air flow rate for transition is initial condition-dependent and it exhibits hysteresis.


Articles with similar content:

CHARACTERISTICS OF TRANSIENT, SWIRL-GENERATED, HOLLOW-CONE SPRAYS
Atomization and Sprays, Vol.16, 2006, issue 5
Julian T. Kashdan, John S. Shrimpton

AN EXPERIMENTAL AND ANALYTICAL STUDY OF THE SPRAY CHARACTERISTICS OF AN INTERMITTENT AIR-ASSISTED FUEL INJECTOR
Atomization and Sprays, Vol.10, 2000, issue 2
Sangmin Choi, Changsoo Jang, Sung-Soo Kim

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

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

RESPONSE OF LIQUID JET TO MODULATED CROSSFLOW
Atomization and Sprays, Vol.24, 2014, issue 2
Jong Guen Lee, Jinkwan Song, Chandrasekar Ramasubramanian