Inertial migration of deformable capsules in channel flow
Inertial migration of deformable capsules in channel flow
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DOI：
10.1063/1.3664402
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发表时间：
2011-12-01
影响因子：
4.6
通讯作者：
Alexeev, Alexander
中科院分区：
文献类型：
--
作者：
Kilimnik, Alex;Mao, Wenbin;Alexeev, Alexander
利用三维计算机模拟，我们研究了中性浮力可变形颗粒在压力驱动的通道流动中的跨流惯性迁移。这些颗粒被模拟成充满粘性流体的弹性壳。我们表明，颗粒在偏离中心位置的通道流动中达到平衡，这取决于颗粒大小、壳的依从性和被封装流体的粘度。然而，这些平衡位置实际上与通道雷诺数在1到100之间的大小无关。我们的研究结果可用于微米级合成颗粒和生物细胞的分选、聚焦和分离。(C) 2011年美国物理研究所。(doi: 10.1063/1.3664402)
Using three-dimensional computer simulations, we study the cross-stream inertial migration of neutrally buoyant deformable particles in a pressure-driven channel flow. The particles are modeled as elastic shells filled with a viscous fluid. We show that the particles equilibrate in a channel flow at off-center positions that depend on particle size, shell compliance, and the viscosity of encapsulated fluid. These equilibrium positions, however, are practically independent of the magnitude of channel Reynolds number in the range between 1 and 100. The results of our studies can be useful for sorting, focusing, and separation of micrometer-sized synthetic particles and biological cells. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3664402]