Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
Atomization and Sprays
Facteur d'impact: 1.262 Facteur d'impact sur 5 ans: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Imprimer: 1044-5110
ISSN En ligne: 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.2017021033
pages 791-805

MICROSCOPIC ANALYSIS OF TRANSVERSAL AND AZIMUTHAL SURFACE DISTURBANCES OF HIGH-PRESSURE SPRAYS

Valeri Kirsch
Institute of Heat and Mass Transfer, RWTH Aachen University, Augustinerbach 6, 52056 Aachen, Germany
Manuel Armin Reddemann
Institute of Heat and Mass Transfer, RWTH Aachen University, Augustinerbach 6, 52056 Aachen, Germany
Johannes Palmer
Institute of Heat and Mass Transfer, RWTH Aachen University, Augustinerbach 6, 52056 Aachen, Germany
Reinhold Kneer
Institute of Heat and Mass Transfer, RWTH Aachen University, Augustinerbach 6, 52062 Aachen, Germany

RÉSUMÉ

A microscopic system, consisting of a transmitted light microscope and constant-pressure flow vessel, is specifically designed to enable highly resolved high-pressure primary breakup investigations at engine-like densities. At first measurements diesel and two alternative fuels are injected with a standard diesel injector at different ambient pressures. Reynolds and Ohnesorge number are varied over a wide range and several individual mechanisms are identified: an asymmetric outlet flow, the formation of sheets, ligaments, and droplets, and finally the growth of azimuthal and transversal surface disturbances. Wavelength magnitudes of transversal disturbances are in good agreement with existing analytical theories of boundary layer instabilities. Azimuthal disturbances are associated with nozzle internal cavitation. For the given high Weber number azimuthal disturbances are mainly responsible for the overall shape and subsequent breakup of the jet core.


Articles with similar content:

TOMOGRAPHIC VISUALIZATION OF THE DENSE CORE REGION IN TRANSIENT DIESEL SPRAYS
ICLASS 94
Proceedings of the Sixth International Conference on Liquid Atomization and Spray Systems, Vol.0, 1994, issue
Gregory J. Smallwood, David R. Snelling, Omer L. Gulder
HIGH-FIDELITY SIMULATIONS OF IMPINGING JET ATOMIZATION
Atomization and Sprays, Vol.23, 2013, issue 12
Vigor Yang, Stephane Popinet, Dongjun Ma, Xiaodong Chen
MODELING THE PRIMARY BREAKUP OF HIGH-SPEED JETS
Atomization and Sprays, Vol.14, 2004, issue 1
Rolf D. Reitz
REAL-TIME X-RAY RADIOGRAPHY STUDY OF LIQUID JET BREAKUP FROM ROCKET ENGINE COAXIAL INJECTORS
International Journal of Energetic Materials and Chemical Propulsion, Vol.3, 1994, issue 1-6
R. D. Woodward, Fan Bill Cheung, R. L. Burch
EXPERIMENTAL CHARACTERIZATION OF SHEAR COAXIAL INJECTORS USING LIQUID/GASEOUS NITROGEN
Atomization and Sprays, Vol.7, 1997, issue 5
M. J. Glogowski, C. Puissant