论文标题
流动循环由游泳T. Aceiti线虫驱动
Fluid circulation driven by collectively organized metachronal waves in swimming T. aceiti nematodes
论文作者
论文摘要
最近的实验表明，线虫{\ it T. aceti}可以在流体滴的边缘组装成统一的起伏组。这种协调的状态由下降波和滴入液滴内部的流体循环组成。我们发现，循环速度约为2 mm/s，几乎是过渡波速度的一半。我们使用Stokes流动近似开发了准二维流体动力学模型。线虫的周期性运动构成了驱动流动的移动边界条件。我们的模型表明，线虫尾巴的大幅度游览产生流体循环。我们讨论对可以增强流体运动的容器的限制，这些容器可以在未来的需求流量生成系统的未来设计中使用。
Recent experiments have shown that the nematode {\it T. aceti} can assemble into collectively undulating groups at the edge of fluid drops. This coordinated state consists of metachronal waves and drives fluid circulation inside the drop. We find that the circulation velocity is about 2 mm/s and nearly half the speed of the metachronal wave. We develop a quasi two-dimensional hydrodynamics model using the Stokes flow approximation. The periodic motion of the nematodes constitute our moving boundary condition that drives the flow. Our model suggests that large amplitude excursions of the nematodes tails produce the fluid circulation. We discuss the constraints on containers that would enhance fluid motion, which could be used in the future design of on demand flow generating systems.
