Unifying length-scale-based rheology of dense suspensions
Unifying length-scale-based rheology of dense suspensions
复制标题
统一致密悬浮液基于长度尺度的流变学
DOI：
10.1103/physrevfluids.9.l012302
复制
发表时间：
2024
影响因子：
2.7
通讯作者：
Galindo-Torres, Sergio Andres
中科院分区：
文献类型：
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作者：
Ge, Zhuan;Man, Teng;Huppert, Herbert E.;Hill, Kimberly M.;Galindo-Torres, Sergio Andres
我们提出了一种基于长度尺度的流变学，用于稠密剪切颗粒悬浮液从惯性主导过渡到粘性主导的过程。我们使用简单的基于物理的考虑因素来推导受到压力和阻力的粒子的长度比例。在此过程中，我们证明了适当选择的长度尺度比本质上提供了法向应力和系统接近其“堵塞”或类固体状态之间的一致关系，即使系统在惯性和粘性状态之间转换（由可变斯托克斯数捕获）。
We present a length-scale-based rheology for dense sheared particle suspensions as they transition from inertial- to viscous-dominated. We derive a length-scale 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 solidlike state, even as a system transitions between inertial and viscous states, captured by a variable Stokes number.