Library Subscription: Guest
Home Begell Digital Library eBooks Journals References & Proceedings Research Collections
Atomization and Sprays

Impact factor: 0.644

ISSN Print: 1044-5110
ISSN Online: 1936-2684

You have access to:
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.v11.i2.30
16 pages

LINEAR INSTABILITY ANALYSIS OF THE VISCOUS LONGITUDINAL PERTURBATION ON AN AIR-BLASTED LIQUID SHEET

Felix Barreras
LITEC/CSIC, Zaragoza; and Centro Politecnico Superior de Ingenieros, Area de Mecanica de Fluidos, Universidad de Zaragoza
Antonio Lozano
Spanish Council Scientifi Research, LITEC/CSIC
Cesar Dopazo
CIEMAT, Av. Complutense 22, Madrid, 28040 Spain

ABSTRACT

This article describes the evolution of sinusoidal waves propagating on a water sheet surrounded by two high-velocity co-flowing air streams. The analysis is based on linear instability theory and includes viscosity in both gas and liquid perturbations, while for the stationary velocity profiles the flows have been treated as inviscid. To discern the role of the gas dynamics, air and water velocities have been varied independently. Flow conditions have been selected to compare the numerical predictions with experimental measurements of oscillation frequencies, wavelengths, and growth rates. The dispersion diagrams show a broad viscosity-enhanced zone, a consequence of considering viscosity in the gas perturbation.