Stresslet asymptotics for a treadmilling swimmer near a two-dimensional corner: hydrodynamic bound states

Stresslet asymptotics for a treadmilling swimmer near a two-dimensional corner: hydrodynamic bound states
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跑步游泳运动员在二维角附近的应力渐进:流体动力学束缚态

DOI:
10.1098/rspa.2012.0237
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发表时间:
2012
期刊:
Mathematical, Physical and Engineering Sciences
影响因子:
--
通讯作者:
Davis A
Davis A
中科院分区:
--
文献类型:
--
作者:
Davis A

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本文研究了在小半径渐近极限条件下,圆铣刀铣削低雷诺数游泳体在直角拐角附近的动力学行为。的控制动力学方程被明确地发现,正确的三阶的游泳者半径,通过梅林变换技术。弧形周期轨道,或“流体动力学束缚态”,在角落区域的存在被确定,这些轨道被发现是吸引子的动态初始游泳者的位置和方向的大范围内。该分析方法可以推广到其它分数角的楔形区域。
The dynamics of a circular treadmilling low Reynolds number swimmer near a right-angled corner is studied in the asymptotic limit in which the radius of the treadmiller is small. The governing dynamical equations are found explicitly, correct to third order in the swimmer radius, by means of Mellin transform techniques. The existence of arc-like periodic orbits, or ‘hydrodynamic bound states’, in the corner region is identified, and these orbits are found to be attractors in the dynamics for a large range of initial swimmer locations and orientations. The analytical approach may be extended to wedge regions of other fractional angles.
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