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Influence of Stokes number on the velocity and concentration distributions in particle-laden jets

Published online by Cambridge University Press:  19 September 2014

Timothy C. W. Lau  and
Graham J. Nathan
Timothy C. W. Lau*
Affiliation:
Centre for Energy Technology, School of Mechanical Engineering, The University of Adelaide, SA 5005, Australia
Graham J. Nathan
Affiliation:
Centre for Energy Technology, School of Mechanical Engineering, The University of Adelaide, SA 5005, Australia
*
†Email address for correspondence: timothy.lau@adelaide.edu.au
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Abstract

The first measurement of the influence of the Stokes number on the distributions of particle concentration and velocity at the exit of a long pipe are reported, together with the subsequent influence on the downstream evolution of these distributions through a particle-laden jet in co-flow. The data were obtained by simultaneous particle image velocimetry (PIV) and planar nephelometry (PN), using four cameras to provide high resolution through the first 30 jet diameters and also correction for optical attenuation. These data provide much more detailed information than is available from previous measurements. From them, a new understanding is obtained of how the Stokes number influences the flow at the jet exit plane and how this influence propagates throughout the jet.

JFM classification

Wakes/Jets: Jets Multiphase and Particle-laden Flows: Multiphase and Particle-laden Flows
Type
Papers
Information
Journal of Fluid Mechanics , Volume 757 , 25 October 2014 , pp. 432 - 457
Copyright
© 2014 Cambridge University Press 

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