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Turbulence and Shear Flow Phenomena -1 First International Symposium

ISBN:
1-56700-135-1 (Print)

FROZEN SIZE PDF RESULTING FROM THE BREAK UP OF AN AIR BUBBLE INJECTED INTO A FULLY DEVELOPED TURBULENT FLOW

C. Martinez-Bazan
Departamento de Ingenieria Mecanica, Universidad Carlos III C/ Butarque 15, 28911 Leganes, Spain

J.L. Montanes
Departamento de Motopropulsion y Termofluidodinamica, ETSI Aeronauticos (UPM) Pz. Cardenal Cisneros 3, 28040 Madrid, Spain

Juan C. Lasheras
Department of Mechanical & Aerospace Engineering, University of California, San Diego, La Jolla, CA 92093-0411, USA

Abstract

The frozen bubble size distribution, resulting from the break up of an air bubble injected into a fully developed region of a high Reynolds number turbulent jet has been measured using a Phase Doppler Particle Analyzer (PDPA). It is shown that the shape of the distribution depends on ε and on initial void fraction, α. However, when the bubble's diameter is non-dimensionalized with the Sauter Mean Diameter, D32, of the distribution, the data is shown to collapse onto a single distribution, independent of ε and α.