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Turbulent dispersion in a non-homogeneous field

Published online by Cambridge University Press:  10 August 1999

ILIAS ILIOPOULOS  and
THOMAS J. HANRATTY
ILIAS ILIOPOULOS
Affiliation:
Department of Chemical Engineering, University of Illinois, Urbana, IL 61801 USA
THOMAS J. HANRATTY
Affiliation:
Department of Chemical Engineering, University of Illinois, Urbana, IL 61801 USA
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Abstract

Dispersion of fluid particles in non-homogeneous turbulence was studied for fully developed flow in a channel. A point source at a distance of 40 wall units from the wall is considered. Data obtained by carrying out experiments in a direct numerical simulation (DNS) are used to test a stochastic model which utilized a modified Langevin equation. All of the parameters, with the exception of the time scales, are obtained from Eulerian statistics. Good agreement is obtained by making simple assumptions about the spatial variation of the time scales.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 392 , 10 August 1999 , pp. 45 - 71
Copyright
© 1999 Cambridge University Press

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