Symmetry Breaking of Tail-Clamped Filaments in Stokes Flow
Symmetry Breaking of Tail-Clamped Filaments in Stokes Flow
复制标题
斯托克斯流中尾夹细丝的对称性破缺
DOI：
10.1103/physrevlett.126.124501
复制
发表时间：
2021
影响因子：
8.6
通讯作者：
t Luca
中科院分区：
文献类型：
--
作者：
Deng Jian;Mao Xuerui;Br;t Luca
流固耦合问题的对称破缺对于理解动物的运动和感知行为具有重要意义。在这封信中，我们研究的SB柔性纤维夹在一端，并放置在展向周期性阵列在斯托克斯流。随着展向距离的增加或丝刚度的减小，丝沿着流向的平衡状态失去稳定性并经历二维和三维SB。对于轻微变形的长丝，粘性力和压力是相称的，而对于极度变形的长丝，粘性力成为主导。
Symmetry breaking (SB) of fluid-structure interaction problems plays an important role in our understanding of animals’ locomotive and sensing behaviors. In this Letter, we study the SB of flexible filaments clamped at one end and placed in a spanwise periodic array in Stokes flow. The equilibrium state of the filament along the streamwise direction loses stability and experiences two-dimensional and then three-dimensional SBs as the spanwise distance increases, or as the filament rigidity reduces. For slightly deformed filaments, the viscous and pressure forces are commensurate, while for extremely deformed filaments the viscous force becomes dominant.