Physical Review Journal Club: Mechanism of Stochastic Resonance in Viscoelastic Channel Flow
Tuesday, October 7, 2025 at 9 a.m. ET
Free registration
The Physical Review Journal Club invites you to a live discussion on October 7 with the authors of the recent Physical Review Fluids paper, “Mechanism of Stochastic Resonance in Viscoelastic Channel Flow.” The presentation will be followed by a Q&A session moderated by PRFluids Editorial Board member Georgios Rigas (Imperial College at London).
Registration is free and a video recording will be provided to all registrants.
Abstract
In bistable nonlinear dynamical systems with the presence of weak periodic forcing and external noise, stochastic resonance (SR) results in strong amplification of the periodic signal, though at shifted frequency. Recently, the authors reported the SR discovery in inertialess viscoelastic channel flow just above pure elastic instability onset in a limited lower subrange of the transition chaotic flow regime.
In their present paper, they clarified the mechanism of deterministic stochastic resonance (DSR) emergence by experimentally verifying three key ingredients of the DSR mechanism: chaotic, flat white noise, and weak elastic waves at multiple channel locations. Moreover, they presented a DSR existence range as a function of the root-mean-square of streamwise velocity fluctuations along the channel length, as another control parameter.
Read ahead:
Mechanism of Stochastic Resonance in Viscoelastic Channel Flow
Yuke Li, Victor Steinberg
Phys. Rev. Fluids 10, L081901
