论文标题
扇贝定理和在中尺度游泳
The Scallop Theorem and Swimming at the Mesoscale
论文作者
论文摘要
通过协同结合建模，仿真和实验，我们表明存在一种自我推广的状态，即流体动力学中的惯性可以与游泳者的惯性分开。不对称的哑铃运动的运动证明了这一点，尽管以相互的方式变形，但由于非近代的斯托克斯流动场而在流体中自我传播。后者源于两个本构珠的沿海时间的差异。这种不对称是第二个自由度，以介质量表恢复了扇贝定理。
By synergistically combining modeling, simulation and experiments, we show that there exists a regime of self-propulsion in which the inertia in the fluid dynamics can be separated from that of the swimmer. This is demonstrated by the motion of an asymmetric dumbbell that, despite deforming in a reciprocal fashion, self-propagates in a fluid due to a non-reciprocal Stokesian flow field. The latter arises from the difference in the coasting times of the two constitutive beads. This asymmetry acts as a second degree of freedom, recovering the scallop theorem at the mesoscopic scale.
