We use numerical simulations to study the flow of athermal, frictionless, soft-core two-dimensional spherocylinders driven by a uniform steady-state simple shear applied at a fixed volume and a fixed finite strain rate $\dot{\gamma }$. Energy dissipation is via a viscous drag with respect to a uniformly sheared host fluid, giving a simple model for flow in a non-Brownian suspension with Newtonian rheology. We study the resulting spatial structure of the sheared system, and compute correlation functions of the velocity, the particle density, the nematic order parameter, and the particle angular velocity. Correlations of density, nematic order, and angular velocity are shown to be short ranged both below and above jamming. We compare a system of size-bidisperse particles with a system of size-monodisperse particles, and argue how differences in spatial order as the packing increases lead to differences in the global nematic order parameter. We consider the effect of shearing on initially well ordered configurations, and show that in many cases the shearing acts to destroy the order, leading to the same steady-state ensemble as found when starting from random initial configurations.

中文翻译：

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剪切驱动的无热，无摩擦的球形气缸悬架的二维流动：空间结构和相关性

我们使用数值模拟研究以固定体积和固定有限应变率施加的均匀稳态简单剪切力驱动的无热，无摩擦，软核二维球面圆柱体的流动 $\dot{\gamma }$。能量消耗是通过相对于均匀剪切的主流体的粘性阻力来实现的，从而给出了具有牛顿流变学特性的非布朗悬浮液中流动的简单模型。我们研究了剪切系统的空间结构，并计算了速度，粒子密度，向列顺序参数和粒子角速度的相关函数。密度，向列顺序和角速度的相关性在干扰的上下都显示出很短的范围。我们将尺寸双分散粒子系统与尺寸单分散粒子系统进行了比较，并论证了随着堆积增加，空间顺序的差异如何导致整体向列顺序参数的差异。我们考虑了剪切对最初井然有序的配置的影响，