Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session G08: Biofluids: Collective Behavior and Active Matter I
3:00 PM–4:05 PM,
Sunday, November 19, 2023
Room: 103B
Chair: Lei Fang, University of Pittsburgh
Abstract: G08.00005 : Collective dynamics of micro-swimmers in Brinkman flows*
3:52 PM–4:05 PM
Presenter:
Enkeleida Lushi
(New Jersey Institute of Technology)
Authors:
Yasser Almoteri
(New Jersey Inst of Tech)
Enkeleida Lushi
(New Jersey Institute of Technology)
We derive a model for rigid active particles immersed in viscous Brinkman flows -- which approximate with a linear resistance term the presence of much smaller inert impurities or stationary obstacles. We show that resistance alters the disturbance flow generated as each active particle swims, and as such alters the hydrodynamical interactions between swimmers and ultimately modifies their coupled dynamics. Simulations implemented using the Immersed Boundary Method show that resistance inhibits correlated collective dynamics in micro-swimmer suspensions because resistance hinders each individual's motion and its interactions with others. We analyze the resulting dynamics for varying resistance strengths, and show that a high resistance, in accordance with results from analysis of the related continuum model, can fully suppress the emergence of macroscopic collective motion.
*Simons Foundation award 639018.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700