论文标题
晶格Boltzmann在翻滚到储罐的过渡上的模拟：膜粘度的影响
Lattice Boltzmann simulations on the tumbling to tank-treading transition: effects of membrane viscosity
论文作者
论文摘要
已广泛研究了红细胞（RBC）的易旋转到储罐进期（TB-TT）过渡，主要关注粘度比$λ$的影响（即，膜内部和膜外部的流体粘度比）和剪切速率$ \dotγ$ applied for rbc rbc。但是，膜粘度$μ_M$在对RBC动力学的现实描述中起着主要作用，只有少数作品系统地将其对TB-TT过渡的影响进行了系统地关注。在这项工作中，我们对膜粘度$μ_m$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $的参数研究。发现，以固定的粘度比$λ$，$μ_m$的较大值导致TB-TT过渡发生的毛细管数值范围增加。我们通过基于晶格Boltzmann模型的中尺度数值模拟来系统地量化这种增加。
The tumbling to tank-treading (TB-TT) transition for red blood cells (RBCs) has been widely investigated, with a main focus on the effects of the viscosity ratio $λ$ (i.e., the ratio between the viscosities of the fluids inside and outside the membrane) and the shear rate $\dotγ$ applied to the RBC. However, the membrane viscosity $μ_m$ plays a major role in a realistic description of RBC's dynamics, and only a few works have systematically focused on its effects on the TB-TT transition. In this work, we provide a parametric investigation on the effect of membrane viscosity $μ_m$ on the TB-TT transition, for a single RBC. It is found that, at fixed viscosity ratios $λ$, larger values of $μ_m$ lead to an increased range of values of capillary number at which the TB-TT transition occurs. We systematically quantify such an increase by means of mesoscale numerical simulations based on the lattice Boltzmann models.
