Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Imprimir: 2152-5102
ISSN On-line: 2152-5110

Volumes:
Volume 46, 2019 Volume 45, 2018 Volume 44, 2017 Volume 43, 2016 Volume 42, 2015 Volume 41, 2014 Volume 40, 2013 Volume 39, 2012 Volume 38, 2011 Volume 37, 2010 Volume 36, 2009 Volume 35, 2008 Volume 34, 2007 Volume 33, 2006 Volume 32, 2005 Volume 31, 2004 Volume 30, 2003 Volume 29, 2002 Volume 28, 2001 Volume 27, 2000 Volume 26, 1999 Volume 25, 1998 Volume 24, 1997 Volume 23, 1996 Volume 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v24.i4-6.400
pages 851-860

Time-Resolved Diffraction Granulometer for Measurements in Transient Sprays

D. Lisiecki
UMR 6614/CORIA, UNIVERSITE DE ROUEN, 76821 Mont Saint Aignan Cedex, France
M. Ledoux
CORIA-UMR CNRS 6614, Universite de Rouen, Site du Madrillet Avenue de l’Universite, BP12 76801 Saint Etienne du Rouvray cedex, France

RESUMO

The study of sprays of droplets issuing from cars injectors requires fast diagnostics synchronized on very short jet appearance. Particle sizer must furthermore be able to measure very small drops in high pressure chambers with restricted access. An instrument with capability for measuring droplet size by Fraunhofer diffraction technique with high frequency acquisition was developed. The temporal variation of the size distribution within a single diesel injection may be now recorded. An inversion program involves a generalized Lorenz Mie theory, developed in the laboratory. With this program, the scattered light of a droplet in a gaussian laser beam can be calculated. The effect of illumination profile (i.e.: ratio of the laser beam diameter on drop size) on the scattered light distribution is evaluated; the smallest beam size for a higher spatial resolution with no bias on measurement may then be calculated.
By use of a standard Malvern detector, measurements of droplet size larger than one micrometer are performed in a pressurized chamber with thick windows. Under the present configuration a special lens with short focus length and large diameter is used. An example of application to a Diesel spray is showed.


Articles with similar content:

AN EXPERIMENTAL STUDY ON MICROSCOPIC CHARACTERISTICS OF FLASH BOILING SPRAY WITH EXTENDED GLARE POINT VELOCIMETRY AND SIZING
Atomization and Sprays, Vol.26, 2016, issue 5
Shenghua Yang, Ming Jia, Zhuo Yao, Shiquan Shen, Tianyou Wang
SIMULTANEOUS MEASUREMENT FOR COMPARISON OF DROPLET SIZES MEASURED BY FREEZING METHOD WITH THOSE BY LASER LIGHT SCATTER DETECTION METHODS
ICLASS 94
Proceedings of the Sixth International Conference on Liquid Atomization and Spray Systems, Vol.0, 1994, issue
Toshio Kurabayashi, T. Nagasaka, Siichi Shiga, K. Kawabata, Takao Karasawa
SOME PROBLEMS ON DROPLET SIZE MEASUREMENT BY IMMERSION LIQUID METHOD
ICLASS 94
Proceedings of the Sixth International Conference on Liquid Atomization and Spray Systems, Vol.0, 1994, issue
T. Fujimatsu, K. Honma, Hideomi Fujita, O. Okada
TEMPERATURE CHARACTERISTICS IN A FLASH ATOMIZATION PROCESS
Atomization and Sprays, Vol.26, 2016, issue 12
Astrid Guenther, Karl-Ernst Wirth, Benedikt Kninger, Philipp Siegler, Andreas Braeuer
IN-CYLINDER MEASUREMENTS OF NO IN A RUNNING DIESEL ENGINE BY MEANS OF LIF DIAGNOSTICS
International Journal of Energetic Materials and Chemical Propulsion, Vol.4, 1997, issue 1-6
G. G. M. Stoffels, Th. M. Brugman, J. J. ter Meulen, C. M. I. Spaanjaars, N. Dam, W. L. Meerts