论文标题
粘弹性流体中旋转粒子的壁诱导的翻译
Wall-induced translation of a rotating particle in viscoelastic fluid
论文作者
论文摘要
剪切稀释和粘弹性是在生物流体中广泛存在的两种非牛顿流体特性。在这项研究中，我们发现壁上的旋转粒子的翻译运动首先会增加，然后随着流体粘弹性的增强而减慢，这与剪切稀疏流体中报道的行为不同（Chen等人J. J. Fluid Mech。2021，927）。我们的研究是通过对Navier-Stokes方程与Oldroyd-B本构模型相结合的数值模拟进行的。预计这项工作将有助于了解复杂液体的墙壁在墙壁附近的旋转球的运动。
Shear-thinning and viscoelasticity are two non-Newtonian fluid properties widely existing in biological fluids. In this study, we found that the translation motion of a rotating particle near a wall speed up firstly, and then slows down with enhancement of fluid viscoelasticity, which is different from the behavior reported in shear thinning fluid (Chen et al. J. Fluid Mech. 2021, 927). Our research is carried out by numerical simulation of Navier-Stokes equations combined with Oldroyd-B constitutive model. This work is expected to be helpful to understand the movement of a rotating sphere near a wall in complex fluids comprehensively.
