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.2018021180
pages 255-279

APPLICATION OF THE INFRARED EXTINCTION TO A SWIRLED AIR/ETHANOL SPRAY DOWNSTREAM FROM A TURBOJET INJECTION SYSTEM

Virginel Bodoc
ONERA - The French Aerospace Lab, Toulouse, 31055, France
Olivier Rouzaud
ONERA - The French Aerospace Lab

RÉSUMÉ

An investigation of the vapor phase concentration is performed using the infrared extinction technique on an ethanol spray injected into a heated environment. Experiments are carried out on a confined geometry behind a real-scale injection system. It is composed of a pressure atomizer and an air swirler. The first part of the paper describes the fundamentals of the measurement technique and the experimental procedure. To obtain spatially resolved results, a deconvolution procedure based on the Abel algorithm and Tikhonov regularization is developed. In the second part, the steady measurements performed downstream from the injector provide the radial evolution of the integral vapor molar concentration for various different air temperatures. In addition, a spectral analysis of time-resolved recordings shows that the liquid droplets are moving with the frequency of the precessing vortex core. In the last part of the paper, the local measured values of concentration are compared to the numerical ones. First, the numerical approach is validated for the pure gaseous and two-phase flow behavior. Second, the experimental and numerical vapor molar concentrations are presented and discussed.