Flipping, scooping, and spinning: Drift of rigid curved nonchiral fibers in simple shear flow
Flipping, scooping, and spinning: Drift of rigid curved nonchiral fibers in simple shear flow
复制标题
翻转、舀取和旋转：刚性弯曲非手性纤维在简单剪切流中的漂移
DOI：
10.1063/1.4769980
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发表时间：
2012
影响因子：
4.6
通讯作者：
D. Klingenberg
中科院分区：
文献类型：
--
作者：
Jianghui Wang;E. Tozzi;M. Graham;D. Klingenberg
本文用计算机模拟方法研究了孤立的、刚性的、中性浮力的、非布朗的、弯曲的、非手征的纤维在低雷诺数不可压缩牛顿流体的简单剪切流中的运动。对于某些初始取向，具有小曲率的纤维在没有外力或扭矩的情况下沿梯度方向稳定地漂移。平均漂移速度和方向取决于纤维的纵横比、曲率和初始取向。漂移是由旋转和平移动力学的耦合以及光纤的翻转、铲取和旋转运动的组合效应引起的。
The motion of isolated, rigid, neutrally-buoyant, non-Brownian, curved, nonchiral fibers in simple shear flow of an incompressible Newtonian fluid at low Reynolds number is studied by computer simulation. For some initial orientations, fibers with small curvature drift steadily in the gradient direction without external forces or torques. The average drift velocity and direction depend on the fiber aspect ratio, curvature, and initial orientation. The drift results from the coupling of rotational and translational dynamics, and the combined effects of flipping, scooping, and spinning motions of the fiber.