Mathematics of Living Matter – Abstracts

4:00 PM – 4:45 PM, Tuesday, October 16, 2018; Room: 114 McAllister bldg.

Helical swimming and helical buckling — explorations in elastohydrodynamics at the microscale

Lisa Fauci, Tulane University, USA

The motion of actuated or passive elastic filaments in a fluid environment is a common element in many biological systems. Examples include diatom chains moving in the ocean, bacterial flagella propelling a cell body, cilia in pulmonary airways, and the polymers embedded in a viscous fluid whose microscopic behavior give rise to macroscopic rheological properties. In cases where these flexible filaments move through confined environments at zero Reynolds number, the confinement could have a dramatic effect upon the dynamics of the system. We will present recent results on the computational modeling of two such systems: the swimming of helical filaments in narrow tubes and the dynamics of actin-like fibers in straining flow.

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