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Laser light-scattering measurements of particle concentration in a turbulent jet

Published online by Cambridge University Press:  11 April 2006

E. J. Shaughnessy  and
J. B. Morton
E. J. Shaughnessy
Affiliation:
Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27706
J. B. Morton
Affiliation:
Department of Engineering Science and Systems, University of Virginia, Charlottesville
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Abstract

A laser light-scattering technique has been used to study the relative particle concentration field in a round turbulent air jet. Measurements were made in the far field of a smoke-marked turbulent jet exhausting into a secondary air stream. Radial distributions of mean particle concentration, concentration fluctuation intensity and intermittency were measured at several streamwise locations. Concentration fluctuation power spectra and the micro- and integral scales of the concentration fluctuations were measured on the jet axis. The effects of ambiguity noise and noise due to optical path attenuation on the performance of the laser light-scattering system are discussed.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 80 , Issue 1 , 4 April 1977 , pp. 129 - 148
Copyright
© 1977 Cambridge University Press

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