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International Conference on Multiphase Flow, ICMF 2010, Tampa, FL, May 30 June 4, 2010

Summary: 7th
International Conference on Multiphase Flow,
ICMF 2010, Tampa, FL, May 30 June 4, 2010
Simulation of Bubble and Particle Interactions with Vortical Flows Using a Discrete
Element Model
Justin Finn
and Sourabh V. Apte

School of Mechanical Industrial and Manufacturing Engineering, Oregon State University, Corvallis, OR 97333, USA
finnj@engr.orst.edu and sva@engr.orst.edu
Keywords: Euler-Lagrange, Bubbly Flows, Discrete Element Model, Two Way Coupling
Discrete Element Model (DEM) is used to simulate bubble and particle interactions with vortical flows. In this
Euler-Lagrange approach, volume-averaged Navier-Stokes equations are solved using a co-located grid finite volume
method. The dispersed phase is assumed spherical and is modeled by tracking the centroids of the particles/bubbles
in a Lagrangian frame. In addition to interphase momentum exchange, the volume occupied by the disperse phase is
accounted for through fluid void fractions in the momentum and continuity equations. Interactions of the dispersed
phase with vortical flows are investigated for both dilute and dense loadings. First, flow generated by the disperse
phase motion are simulated to reproduce experimentally observed vortical flow features: (i) the breakup of a viscous
blob of particles falling under the influence of gravity and (ii) the transient migration of a buoyant bubble plume.


Source: Apte, Sourabh V. - School of Mechanical, Industrial, and Manufacturing Engineering, Oregon State University


Collections: Engineering