Journal Article

FZJ-2021-05354

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Competing effects of inertia, sheet elasticity, fluid compressibility, and viscoelasticity on the synchronization of two actuated sheets

Mo, C. ; Fedosov, D. A. (Corresponding author)FZJ*

2021
American Institute of Physics [S.l.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/29516  doi:10.1063/5.0049099

Abstract: Synchronization of two actuated sheets serves as a simple model for the interaction between flagellated microswimmers. Various factors, including inertia, sheet elasticity, and fluid viscoelasticity, have been suggested to facilitate the synchronization of two sheets; however, the importance of different contributions to this process still remains unclear. We perform a systematic investigation of competing effects of inertia, sheet elasticity, fluid compressibility, and viscoelasticity on the synchronization of two sheets. Characteristic time 𝜏s for the synchronization caused by inertial effects is inversely proportional to sheet Reynolds number Re, such that 𝜏s𝜔∝Re−1 with ω being the wave frequency. Synchronization toward stable in-phase or opposite-phase configuration of two sheets is determined by the competition of inertial effects, sheet elasticity, fluid compressibility, and viscoelasticity. Interestingly, fluid viscoelasticity results in strong synchronization forces for large beating amplitudes and Deborah numbers De > 1, which dominates over other factors and favors the in-phase configuration. Therefore, our results show that fluid viscoelasticity can dramatically enhance synchronization of microswimmers. Our investigation deciphers the importance of different competing effects for the synchronization of two actuated sheets, leading to a better understanding of interactions between microswimmers and their collective behavior.

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Contributing Institute(s):

1. Theoretische Physik der Lebenden Materie (IBI-5)

Research Program(s):

1. 5241 - Molecular Information Processing in Cellular Systems (POF4-524) (POF4-524)

Appears in the scientific report 2021

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; National-Konsortium ; Nationallizenz ; PubMed Central ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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