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Sriram Ramaswamy (Indian Institute of Science)
Wednesday 05 June 2024, 16:00-17:00
Rothschild Public Lecture: Inertia, Turbulence and the Concentration Field in Active Fluids
- đ¤ Speaker: Sriram Ramaswamy (Indian Institute of Science)
- đ Date & Time: Wednesday 05 June 2024, 16:00 - 17:00
- đ Venue: Seminar Room 1, Newton Institute
Abstract
The spectacular phenomena displayed by fluids of self-driven particles arise through the interplay of broken time-reversal symmetry with conservation laws of matter and total momentum. I will open with the transition from order to active turbulence, the end-state of the instability of aligned states of orientable motile particles, with an inertial rather than a viscous perspective. I will discuss two simplifying limits – a one-component active fluid, and a densely packed suspension – in which the active-particle concentration does not appear explicitly. I will then turn to the interaction of hydrodynamic flow and particle currents in varied settings: an obstacle in a dilute suspension, as well as phenomena in denser systems. At each stage I will highlight fundamental theoretical issues.
Series This talk is part of the Isaac Newton Institute Seminar Series series.
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