APPLICATIONS OF FINITE-DIFFERENCE LATTICE BOLTZMANN METHOD TO BREAKUP AND COALESCENCE IN MULTIPHASE FLOWS

被引：15

作者：

Chiappini, Daniele ^{[1
]}

Bella, Gino ^{[1
]}

Succi, Sauro ^{[2
]}

Ubertini, Stefano ^{[3
]}

机构：

[1] Univ Roma Tor Vergata, Dept Mech Engn, I-00133 Rome, Italy

[2] CNR, IAC, I-00185 Rome, Italy

[3] Univ Naples Parthenope, Isola Ctr Direz C4, I-80143 Naples, Italy

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS C | 2009年 / 20卷 / 11期

关键词：

Droplet breakup; coalescence; kinetic approach; SIMULATION; DEFORMATION; COLLISION; DYNAMICS; EQUATION;

D O I：

10.1142/S0129183109014746

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

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.(1-4) Three 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.

引用

页码：1803 / 1816

页数：14

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