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Modeling of the Film Drainage Effect on Colliding Particle Statistics in Dilute Turbulent Gas-Solid Flows

[+] Author Affiliations
P. Fede, O. Simonin

Université de Toulouse; CNRS, Toulouse, France

Paper No. FEDSM2009-78053, pp. 1843-1852; 10 pages
doi:10.1115/FEDSM2009-78053
From:
  • ASME 2009 Fluids Engineering Division Summer Meeting
  • Volume 1: Symposia, Parts A, B and C
  • Vail, Colorado, USA, August 2–6, 2009
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-4372-7 | eISBN: 978-0-7918-3855-6
  • Copyright © 2009 by ASME

abstract

The general purpose of this paper is the modeling of particle-turbulence interaction and particle-particle collisions taking place in dilute gas-solid flows. Direct numerical simulation of a homogeneous isotropic turbulence coupled with discrete particle simulation have been carried out with a model taking into account the effect of the film drainage between colliding particles. The results show that, depending on the particle Stokes number, the particle kinetic energy is strongly modified by the fluid drainage effect. In the frame of the joint fluid-particle approach, taking into account the correlations induced by the turbulence on the colliding velocities, a model has been derived and compared with the DNS results.

Copyright © 2009 by ASME

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