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.v6.i2.60
pages 227-244

SHEAR COAXIAL INJECTOR ATOMIZATION PHENOMENA FOR COMBUSTING AND NONCOMBUSTING CONDITIONS

Sibtosh Pal
Propulsion Engineering Research Center and Department of Mechanical Engineering, The Pennsylvania State University, University Park, Pennsylvania, USA
M. D. Moser
Propulsion Engineering Research Center and Department of Mechanical Engineering, The Pennsylvania State University, University Park, Pennsylvania, USA
H. M. Ryan
Propulsion Engineering Research Center and Department of Mechanical Engineering, The Pennsylvania State University, University Park, Pennsylvania, USA
M. J. Foust
Propulsion Engineering Research Center and Department of Mechanical Engineering, The Pennsylvania State University, University Park, Pennsylvania, USA
Robert J. Santoro
Propulsion Engineering Research Center and Department of Mechanical Engineering, The Pennsylvania State University, University Park, Pennsylvania

RÉSUMÉ

Measurements of liquid oxygen (LOX) drop size and velocity in a unielement liquid-propellant rocket chamber are presented along with complementary measurements of drop size/velocity for simulants under cold flow conditions. The drop size comparisons between the cold flow and hot-fire conditions showed that the drops were larger for combusting conditions. This observation is argued to be consistent with effects due to differences in the flow fields between hot-fire and cold flow conditions and more rapid vaporization of smaller drops under combusting conditions. The use of the phase Doppler particle analyzer (PDPA) in obtaining temporally averaged probability density functions of drop size in a harsh rocket environment has been demonstrated. The PDPA measurements indicate that the atomization process is characterized by either the presence of nonspherical liquid structures or the production of extensive dense drop regions under these conditions. Finally, the need for more extensive studies under a wider variety of chamber conditions is indicated.