论文标题
奇数微武器的仿真
Simulations of Odd Microswimmers
论文作者
论文摘要
我们对由三个球体和两个奇数弹簧组成的奇数微晶状体进行数值模拟。为了描述流体动力的相互作用，使用了Oseen型和Rotne-Prager-Yamakawa（RPY）型迁移率。对于Oseen型迁移率，模拟结果定量再现了平均速度的渐近表达。另一方面，对于RPY型迁移率，平均速度小于Oseen型迁移率的速度，并且对于较大的球体，偏差更为明显。我们还对具有不同球体大小的微晶状体进行模拟，并表明平均速度比相等大小的情况小。中间球的大小在确定平均速度方面起着重要作用。
We perform numerical simulations of odd microswimmers consisting of three spheres and two odd springs. To describe the hydrodynamic interaction, both the Oseen-type and the Rotne-Prager-Yamakawa (RPY)-type mobilities are used. For the Oseen-type mobility, the simulation results quantitatively reproduce the asymptotic expression of the average velocity. For the RPY-type mobility, on the other hand, the average velocity is smaller than that of the Oseen-type mobility and the deviation is more pronounced for larger spheres. We also perform simulations of microswimmers having different sphere sizes and show that the average velocity becomes smaller than that of the equal size case. The size of the middle sphere plays an important role in determining the average velocity.
