Metzger Bloen, Pham Phong, Butler Jason E
IUSTI-CNRS UMR 7343, Aix-Marseille University, France.
Phys Rev E Stat Nonlin Soft Matter Phys. 2013 May;87(5):052304. doi: 10.1103/PhysRevE.87.052304. Epub 2013 May 16.
We investigate non-Brownian particles suspended in a periodic shear-flow using simulations. Following Metzger and Butler [Phys. Rev. E 82, 051406 (2010)], we show that the chaotic dynamics arising from lubrication interactions are too weak to generate an observable particle dispersion. The irreversibility observed in periodic flow is dominated by contact interactions. Nonetheless, we show that lubrication interactions must be included in the calculation to obtain results that agree with experiments.
我们通过模拟研究了悬浮在周期性剪切流中的非布朗粒子。遵循梅茨格和巴特勒[《物理评论E》82, 051406 (2010)]的研究，我们表明，由润滑相互作用产生的混沌动力学太弱，无法产生可观测的粒子扩散。在周期性流动中观察到的不可逆性主要由接触相互作用主导。尽管如此，我们表明在计算中必须包含润滑相互作用，以获得与实验相符的结果。
