Large-scale Structures in Transitional Turbulence

Explore a one-hour seminar lecture examining the fascinating phenomenon of large-scale periodic patterns in transitional turbulence within wall-bounded shear flows. Delve into Professor Dwight Barkley's research from the University of Warwick, focusing on how these patterns spontaneously emerge from uniform turbulence as Reynolds numbers decrease. Learn about a novel model derived from the Navier-Stokes equations, projected onto vertical modes with Reynolds stresses and dissipation closure. Understand the two-dimensional PDE model's composition of 5 fields describing large-scale flow and additional fields representing turbulent kinetic energy. Discover new perspectives on spatiotemporal dynamics in transitional turbulence, presented as part of the Anti-diffusive dynamics series, with collaborative insights from Santiago Benavides.