We explore the effects of swimming in a kinetic model of active rodlike particles in Stokes flow. The stability of the uniform, isotropic steady state depends on the swimming mechanism — pullers (front-actuated) vs. pushers (rear-actuated) — as well as a parameter encompassing the ratio of swimming speed to active stress magnitude and particle concentration. In particular, pusher suspensions are known to exhibit instabilities beyond a certain parameter threshold. Our results come in two complementary flavors: 1. Pattern formation within the unstable parameter region (joint work with Mike Shelley) and 2. (Enhanced) stability due to swimming outside the unstable region (joint work with Dallas Albritton).
On the effects of swimming in an active suspension
Laurel Ohm, Princeton University
2022 AWM Research Symposium
New EDGE (Enhancing Diversity in Graduate Education) PhDs Special Session: Pure and Applied talks by Women Math Warriors