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Summary: Modeling bubble-vortex interactions
Modeling and simulation of multiple bubble entrainment and interactions with two
dimensional vortical flows
Justin Finn,1, a)
Ehsan Shams,1, b)
and Sourabh V. Apte1, c)
School of Mechanical, Industrial, and Manufacturing Engineering
Oregon State University, Corvallis, OR 97331.
(Dated: 5 November 2010)
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Modeling bubble-vortex interactions
Simulations of bubble entrainment and interactions with two dimensional vorti-
cal flows are preformed using a Discrete Element Model (DEM). In this Eulerian-
Lagrangian approach, solution to the carrier phase is obtained using direct numerical
simulation whereas motion of subgrid bubbles is modeled using Lagrangian track-
ing. The volumetric displacement of the fluid by the finite size of the bubbles is
modeled along with interphase momentum-exchange for a realistic coupling of the
bubbles to the carrier phase. In order to assess the importance of this volumetric
coupling effect even at low overall volume loading, simulations of few microbubbles
entrained in a traveling vortex tube is studied in detail. The test case resembles
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