Lattice Boltzmann simulation of the dispersion of aggregated particles under shear flows
Lattice Boltzmann simulation of the dispersion of aggregated particles under shear flows
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DOI：
10.1016/j.matcom.2006.05.022
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发表时间：
2006-09
期刊：
影响因子：
--
通讯作者：
T. Inamuro;T.
中科院分区：
文献类型：
--
作者：
T. Inamuro;T.
将多组分非混相流体的晶格玻尔兹曼方法（LBM）应用于剪切流动中颗粒团簇的变形和破碎的模拟。在模拟中，固体颗粒被模拟为具有强界面张力和大粘度的液滴。粒子间的相互作用考虑了范德华引力。引入了流体动力阻力与黏结力I的比值，研究了黏结力I对剪切流中聚集体变形和破碎的影响。当I大于100时，骨料更容易变形和分散。
The lattice Boltzmann method (LBM) for multicomponent immiscible fluids is applied to simulations of the deformation and breakup of a particle-cluster aggregate in shear flows. In the simulations, the solid particle is modeled by a droplet with strong interfacial tension and large viscosity. The van der Waals attraction force is taken into account for the interaction between the particles. The ratio of the hydrodynamic drag force to cohesive force, I, is introduced, and the effect of I on the aggregate deformation and breakup in shear flows is investigated. It is found that the aggregate is easier to deform and to be dispersed when I is over 100.