Velocity measurements in a turbulent,dilute, two-phase jet |
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Authors: | C. K. Zoltani A. F. Bicen |
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Affiliation: | (1) Ballistic Research Laboratory, Aberdeen Proving Ground, 21005-5066, MD, USA;(2) Imperical College of Science and Medicine, Exhibition Road, SW7 2BX London, UK |
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Abstract: | The results of an experimental investigation into the behavior of unconfined, steady, fully turbulent, two-phase jets are described. A round jet of 25.4 mm in diameter, exit velocity of 20 m/s and containing 80 m beads with a mass density of loading of 1.5% was examined. Mean velocity profiles at several stations, as well as the rms values and velocity cross-correlations for both phases were measured by laser-Doppler velocimetry. It was found that the particles lagged the fluid by 8% near the exit, but later, at 9 jet diameters downstream led it by about 7%. Also, the velocity profiles of the particles were flatter than those of the fluid. |
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