论文标题
统一的基于长度尺寸的颗粒流体混合物的流变学
Unifying Lengthscale-Based Rheology of Dense Granular-Fluid Mixtures
论文作者
论文摘要
在这种交流中，我们提出了一种新的基于长度尺度的流变性，用于在过渡到以粘性为主的固定粒子悬浮液。我们使用基于压力和阻力力的粒子的直接物理考虑来得出长度尺度的比率。在这样做的过程中，我们证明了一个适当选择的长度尺度比率本质上提供了正常应力与系统接近其“堵塞”或类似固态状态之间的一致关系，即使是作为惯性和粘性状态之间的系统过渡，并由可变的Stokes数字捕获。
In this communication, we present a new lengthscale-based rheology for dense sheared particle suspensions as they transition from inertial- to viscous-dominated. We derive a lengthscale ratio using straightforward physics-based considerations for a particle subjected to pressure and drag forces. In doing so, we demonstrate that an appropriately chosen length-scale ratio intrinsically provides a consistent relationship between normal stress and system proximity to its ''jammed'' or solid-like state, even as a system transitions between inertial and viscous states, captured by a variable Stokes number.
