Suscripción a Biblioteca: Guest
Portal Digitalde Biblioteca Digital eLibros Revistas Referencias y Libros de Ponencias Colecciones
International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.9

ISSN Imprimir: 2152-5102
ISSN En Línea: 2152-5110

Volumes:
Volumen 47, 2020 Volumen 46, 2019 Volumen 45, 2018 Volumen 44, 2017 Volumen 43, 2016 Volumen 42, 2015 Volumen 41, 2014 Volumen 40, 2013 Volumen 39, 2012 Volumen 38, 2011 Volumen 37, 2010 Volumen 36, 2009 Volumen 35, 2008 Volumen 34, 2007 Volumen 33, 2006 Volumen 32, 2005 Volumen 31, 2004 Volumen 30, 2003 Volumen 29, 2002 Volumen 28, 2001 Volumen 27, 2000 Volumen 26, 1999 Volumen 25, 1998 Volumen 24, 1997 Volumen 23, 1996 Volumen 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v24.i1-3.130
pages 128-137

Spray Trajectories of Liquid Fuel Jets in Subsonic Crossflows

P.-K. Wu
Department of Aerospace Engineering, The University of Michigan, Ann Arbor, Michigan, USA
K. A. Kirkendall
Taitech, Inc., 3675 Harmeling Dr., Dayton, Ohio 45440, U.S.A.
R. P. Fuller
Taitech, Inc., 3675 Harmeling Dr., Dayton, Ohio 45440, U.S.A.
M. R. Gruber
Wright Laboratory, Aero Propulsion and Power Directorate, Wright-Patterson AFB, Ohio 45433, U.S.A.
A. S. Nejad
Wright Laboratory, Aero Propulsion and Power Directorate, Wright-Patterson AFB, Ohio 45433, U.S.A.

SINOPSIS

Spray trajectories of liquid jets injected into a subsonic crossflow were experimentally studied and correlated with jet operating parameters. The spray dynamics are known to be different in the three spray regimes: the column, the ligament, and the droplet regimes. Trajectory correlations were therefore developed for the column and droplet regimes separately in an effort to gain a better understanding of the flow dynamics. A previously obtained column trajectory correlation was tested against results from other studies; the comparison indicates that the trajectory can be predicted based on consideration of aerodynamic acceleration. However, the trajectory may be affected by variations in incoming air velocity profiles, boundary layer thickness, and injector passage design. Experimentally obtained spray trajectories were correlated using simplified momentum equations of a spherical droplet in an air flow. Correlations of droplet locations, velocities, and drag functions at the upper spray boundary were obtained. Results suggest that droplet sizes decrease as the air freestream velocity increases, and they are independent of liquid property variations. At x/d = 150, the droplets at the upper spray boundary always have an axial velocity of 70% of the air freestream velocity and a transverse velocity of 51 % of the injection velocity. Predictions based on the correlations obtained are in fair agreement with measured values. The correlations obtained in this study provide not only the location of the spray boundary, but also droplet sizes and velocities.


Articles with similar content:

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
TRAJECTORY AND MOMENTUM COHERENCE BREAKDOWN OF A LIQUID JET IN HIGH-DENSITY AIR CROSS-FLOW
Atomization and Sprays, Vol.17, 2007, issue 1
Raffaele Ragucci, Antonio Cavaliere, Alessandro Bellofiore
PRIMARY BREAKUP OF ROUND AERATED-LIQUID JETS IN SUPERSONIC CROSSFLOWS
Atomization and Sprays, Vol.16, 2006, issue 6
C. Aalburg, Thomas A. Jackson, G. M. Faeth, C. D. Carter, K.-C. Lin, Khaled A. Sallam
TRAJECTORY OF WATER JET EXPOSED TO LOW SUBSONIC CROSS-FLOW
Atomization and Sprays, Vol.16, 2006, issue 8
Madjid Birouk, C. O. Iyogun, Neil Popplewell
PRIMARY BREAKUP IN LIQUID-GAS MIXING LAYERS
Atomization and Sprays, Vol.1, 1991, issue 4
G. A. Ruff, P.-K. Wu, G. M. Faeth