Home Books eBooks Journals References & Proceedings Authors, Editors, Reviewers A-Z Product Index Awards
ICLASS 94<br>Proceedings of the Sixth International Conference on Liquid Atomization and Spray Systems

ISBN:
978-1-56700-019-1 (Print)
978-1-56700-445-5 (Online)

TWO-PHASE FLOW MEASUREMENTS IN COXIAL JETS INCLUDING PARTICLE SIZING

G. Monote
University of Poitiers, Mignaloux-Beauvoir, France

Jean-Louis Carreau
Institut PPRIME, Département Fluides, Thermique, Combustion, CNRS ENSMA Université de Poitiers UPR 3346, ENSMA BP 109, 86960 FUTUROSCOPE Cedex, France

D. Le Visage
Laboratoire de Combustion et de Detonique, UPR 9028 au CNRS, ENSMA, Universite de Poitiers, Futuroscope Cedex, France

Francis Roger
Institut PPRIME, Département Fluides, Thermique, Combustion, CNRS ENSMA Université de Poitiers UPR 3346, ENSMA BP 109, 86960 FUTUROSCOPE Cedex, France

Abstract

Two-phase flow measurements in coaxial jets (water and tenside aqueous solutions - air) with similar velocities and injector geometry to the VULCAIN engine were the main purposes of this study. Firstly, a fiber optic device determined the Liquid Presence Probability (LPP = 1 - void fraction) in the dense part of the jet. Secondly, the Phase Doppler Particle Analizer (PDPA) technique measured diameters and velocities of liquid particles. The following results were obtained . i) radial and axial Liquid Presence Probability distributions present a characteristic behaviour of the dense phase in the near field, more evident for initial liquid velocity ≥ 15 m.s-1, ii) the dilute spray region (LPP ≤ 0.1) exhibits phase slipping and contains little volume of the injected liquid.