TY  - JOUR
AU  - Mo, Chaojie
AU  - Fedosov, Dmitry A.
TI  - Competing effects of inertia, sheet elasticity, fluid compressibility, and viscoelasticity on the synchronization of two actuated sheets
JO  - Physics of fluids
VL  - 33
IS  - 4
SN  - 1070-6631
CY  - [S.l.]
PB  - American Institute of Physics
M1  - FZJ-2021-05354
SP  - 043109
PY  - 2021
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000642185700001
DO  - DOI:10.1063/5.0049099
UR  - https://juser.fz-juelich.de/record/903714
ER  -