Numerical simulations are extensively used to investigate the motion of suspended particles in a fluid and their influence on the dynamics of the overall flow. Contexts range from the rheology of concentrated suspensions in a viscous fluid to the dynamics of particle-laden turbulent flows. This review summarizes several current approaches to the numerical simulation of rigid particles suspended in a flow, pointing out both common features and differences, along with their primary range of application. The focus is on non-Brownian systems for which thermal fluctuations do not play a role, whereas interparticle forces may result in particle self-assembly. Applications may include the motion of a few isolated particles with complex shape or the collective dynamics of many suspended particles.

中文翻译：

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颗粒流和浓悬浮液的模拟方法

数值模拟广泛用于研究悬浮颗粒在流体中的运动及其对整体流动动力学的影响。背景范围从粘性流体中浓缩悬浮液的流变学到载有颗粒的湍流动力学。这篇综述总结了几种当前对悬浮在流动中的刚性粒子进行数值模拟的方法，指出了它们的共同特征和差异，以及它们的主要应用范围。重点是热波动不发挥作用的非布朗系统，而粒子间力可能导致粒子自组装。应用可能包括几个具有复杂形状的孤立粒子的运动或许多悬浮粒子的集体动力学。