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An Eulerian-Lagrangian Approach for the Numerical Simulation and Visualization of Two-Dimensional Fluidized Beds

[+] Author Affiliations
Ph. Traoré, C. Herbreteau, R. Bouard

L.E.A., Futuroscope-Chasseneuil Cedex, France

Paper No. IMECE2002-33114, pp. 629-634; 6 pages
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Fluids Engineering
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3657-6 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME


This paper deals with an Eulerian-Lagrangian model for dispersed multiphase flow in which all the interactions of any kind are taking into account. The fluid phase and particles interactions are two way coupled while all the collisions between the particles or between the particles and the walls are calculated. The Navier-Stokes equations (fluid phase continuity and momentum equations including exchange from the particle to the fluid is modeled to simulate the effect of the presence of the particles in the fluid phase) are solved on a staggered Eulerian grid by a finite volume discretisation type method. The originality of the Lagrangian approach used here for the particles motion, lies in the way of managing the collisions which are calculated using simple mechanical models such as a spring, dashpot and friction slider at the contact points following the Distinct Element Method DEM [1]. In the Lagrangian stage, motion’s calculation of each discrete particle including collisions effects is generally time consuming. In the context of this paper we shall show how to optimized the contacts tracking algorithm in an efficient way to increase significantly the capability of the DEM.

Copyright © 2002 by ASME



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