Atomization and Sprays Journal of the International Institutes for Liquid Atomization and Spray Systems

ISSN for PRINT: 1045-5110

For Online Access

Best Paper Award Selection - Editorial Board Site

2001, Volume11

Issue 2

98 pages

Issue price - $75.00

Felix Barreras
LITEC/CSIC, Zaragoza; and Centro Politecnico Superior de Ingenieros, Area de Mecanica de Fluidos, Universidad de Zaragoza, Zaragoza, Spain

Antonio Lozano
LITEC/CSIC. Maria de Luna 10, 50018 Zaragoza, Spain

Cesar Dopazo
University of Zaragoza, Fluid Mechanics Group/LITEC, Maria de Luna, 3, Zaragoza, 50015, Spain

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.

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