Paper Title:
Turbulent Diffusion of Suspended Particles: Analysis of the Turbulent Schmidt Number
  Abstract

For mass transfer applications, CFD codes need the turbulent Schmidt number . The aim of our study is the analysis of some theoretical closure results and analytical formulations for . We will investigate different formulations of from the basic conservation equations for sediment-water mixtures in turbulent open-channel flows based on a two-fluid description and a kinetic model. The kinetic model for turbulent two-phase flows provides which depends on particle Stokes number. Our study show that the two approaches provide that depends on turbulent kinetic energy (TKE), eddy viscosity and particles settling velocity. For the analysis, accurate analytical formulations for TKE and eddy viscosity calibrated by DNS data are presented.

  Info
Periodical
Defect and Diffusion Forum (Volumes 312-315)
Edited by
Andreas Öchsner, Graeme E. Murch and João M.P.Q. Delgado
Pages
794-799
DOI
10.4028/www.scientific.net/DDF.312-315.794
Citation
R. Absi, S. Marchandon, M. Lavarde, "Turbulent Diffusion of Suspended Particles: Analysis of the Turbulent Schmidt Number", Defect and Diffusion Forum, Vols. 312-315, pp. 794-799, 2011
Online since
April 2011
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