论文标题
流体动力相互作用无摩擦软颗粒的中等密度惯性悬浮液的不连续剪切增厚
Discontinuous shear thickening of a moderately dense inertial suspension of hydrodynamically interacting frictionless soft particles
论文作者
论文摘要
我们证明，即使是在中等密度的，流体动力相互作用的无摩擦软颗粒的惯性悬浮液中，不连续的剪切增厚（DST）也可以发生。使用润滑摩擦离散元素方法，我们的模拟表明，DST可以在较低的粒子密度下出现，前提是悬浮颗粒的惯性及其柔软度都足够明显。此外，我们表明，在这些条件下，从仿真获得的DST行为与动力学理论预测的dst行为同意，即使没有考虑流体动力相互作用。这些发现扩展了对软粒子系统中DST的理解，并突出了粒子惯性和柔软度在控制流变行为中的重要性。
We demonstrate that discontinuous shear thickening (DST) can occur even in moderately dense, inertial suspensions of hydrodynamically interacting, frictionless soft particles. Using the Lubrication-Friction Discrete Element Method, our simulations reveal that DST can emerge at lower particle densities, provided that both the inertia of the suspended particles and their softness are sufficiently pronounced. Furthermore, we show that, under these conditions, the DST behavior obtained from the simulation qualitatively agrees with that predicted by kinetic theory, even without accounting for hydrodynamic interactions. These findings expand the understanding of DST in soft particle systems and highlight the importance of particle inertia and softness in controlling rheological behavior.
