Observing a dynamical skeleton of turbulence in Taylor–Couette flow experiments
2023; Royal Society; Volume: 381; Issue: 2243 Linguagem: Inglês
10.1098/rsta.2022.0137
ISSN1471-2962
AutoresChristopher Crowley, Joshua L. Pughe-Sanford, Wesley Toler, Roman O. Grigoriev, Michael F. Schatz,
Tópico(s)Meteorological Phenomena and Simulations
ResumoRecent work suggests unstable recurrent solutions of the equations governing fluid flow can play an important role in structuring the dynamics of turbulence. Here we present a method for detecting intervals of time where turbulence "shadows" (spatially and temporally mimics) recurrent solutions. We find that shadowing occurs frequently and repeatedly in both numerical and experimental observations of counter-rotating Taylor-Couette flow, despite the relatively small number of known recurrent solutions in this system. Our results set the stage for experimentally-grounded dynamical descriptions of turbulence in a variety of wall-bounded shear flows, enabling applications to forecasting and control.
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