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Simulation of Interface Deformation in Shear Flow Using Binary Fluid Lattice Boltzmann Model

[+] Author Affiliations
Naoki Takada

National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan

Akio Tomiyama, Shigeo Hosokawa

Kobe University, Kobe, Japan

Paper No. FEDSM2002-31150, pp. 867-874; 8 pages
doi:10.1115/FEDSM2002-31150
From:
  • ASME 2002 Joint U.S.-European Fluids Engineering Division Conference
  • Volume 1: Fora, Parts A and B
  • Montreal, Quebec, Canada, July 14–18, 2002
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3615-0 | eISBN: 0-7918-3600-2
  • Copyright © 2002 by ASME

abstract

In this paper, we describes the simulations of two- and three-dimensional interfacial motions in shear flow based on the lattice Boltzmann method (LBM), in which a macroscopic fluid flow results from averaging collision and translation of mesoscopic particles and an interface can be reproduced in a self-organizing way by repulsive interaction between particles. A new scheme in the binary fluid model is proposed to simulate motions of immiscible two phases with different mass densities, and examined in numerical analysis of bubble motions under gravity in a circular tube and deformation of bubble under shear stress. For higher Reynolds numbers, a finite difference-based lattice Boltzmann scheme is applied to the kinetic equations of particle to improve numerical stability, which can capture break-up motions of bubble. Parallel computing in LBM is also discussed briefly for efficient speeding up.

Copyright © 2002 by ASME

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