Simulations of Odd Microswimmers

Kobayashi, Akira; Yasuda, Kento; Lin, Li-Shing; Sou, Isamu; Hosaka, Yuto; Komura, Shigeyuki

doi:10.7566/JPSJ.92.034803

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Simulations of Odd Microswimmers

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Hosaka, Yuto
Department of Living Matter Physics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Citation

Kobayashi, A., Yasuda, K., Lin, L.-S., Sou, I., Hosaka, Y., & Komura, S. (2023). Simulations of Odd Microswimmers. Journal of the Physical Society of Japan, 92(3): 034803. doi:10.7566/JPSJ.92.034803.

Cite as: https://hdl.handle.net/21.11116/0000-000C-C7D1-7

Abstract

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.