Multiscale quasi-time-periodic coherent structures in shear flows
Abstract
Attempts to disentangle shear-flow turbulence often focus on identifying relatively simple solutions, such as travelling waves or periodic orbits. We show, however, that capturing multiscale features requires considering states at least as complex as quasi-time-periodic solutions. Approximations of these states can be computed efficiently using a quasi-linear model, consistent with the large-Reynolds-number asymptotic analysis. The quasi-linear structure is key to producing multiscale critical layers that generate vortices obeying Taylor’s frozen-flow hypothesis.
Fields of Study & Subjects
Fluid Dynamics and Turbulent Flows
Nonlinear Dynamics and Pattern Formation
Ocean Waves and Remote Sensing
Publication details
- Journal / source
- Journal of Fluid Mechanics
- Publisher
- Cambridge University Press (CUP)
- Volume
- 1034
- Publication date
- 4 May 2026
- Language
- EN