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Applications Of Finite-Difference Lattice Boltzmann Method To Breakup And Coalescence In Multiphase Flows

Author

Listed:
  • DANIELE CHIAPPINI

    (Department of Mechanical Engineering, University of Rome Tor Vergata, Viale del Politecnico 1, Rome, 00133, Italy)

  • GINO BELLA

    (Department of Mechanical Engineering, University of Rome Tor Vergata, Viale del Politecnico 1, Rome, 00133, Italy)

  • SAURO SUCCI

    (IAC-CNR, Via dei Taurini 19, Rome, 00185, Italy)

  • STEFANO UBERTINI

    (University of Naples Parthenope, Isola-C4 Centro Direzionale, Naples, 80143, Italy)

Abstract

We present an application of the hybrid finite-difference Lattice-Boltzmann model, recently introduced by Lee and coworkers for the numerical simulation of complex multiphase flows.1–4Three typical test-case applications are discussed, namely Rayleigh–Taylor instability, liquid droplet break-up and coalescence. The numerical simulations of the Rayleigh–Taylor instability confirm the capability of Lee's method to reproduce literature results obtained with previous Lattice-Boltzmann models for non-ideal fluids. Simulations of two-dimensional droplet breakup reproduce the qualitative regimes observed in three-dimensional simulations, with mild quantitative deviations. Finally, the simulation of droplet coalescence highlights major departures from the three-dimensional picture.

Suggested Citation

  • Daniele Chiappini & Gino Bella & Sauro Succi & Stefano Ubertini, 2009. "Applications Of Finite-Difference Lattice Boltzmann Method To Breakup And Coalescence In Multiphase Flows," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 20(11), pages 1803-1816.
    • Handle: RePEc:wsi:ijmpcx:v:20:y:2009:i:11:n:s0129183109014746
    DOI: 10.1142/S0129183109014746
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