Extreme events in turbulent flow

Extreme events in turbulent flow are associated with intense stretching of concentrated vortices, intermittent in both space and time. The occurrence of such events has been investigated in a turbulent flow driven by counter-rotating propellors (Debue et al., J. Fluid Mech., 2021), and local flow structures have been identified. Interesting theoretical problems arise in relation to this work; these are briefly considered in this focus paper.

Automated summary

The study explores extreme events in turbulent flow associated with intense stretching of concentrated vortices, focusing on a turbulent flow driven by counter-rotating propellors. Local flow structures have been identified, and interesting theoretical problems are briefly considered.