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Updated: Apr 30, 2026

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
Published on: May 9, 2021
Recurrent bursts via linear processes in turbulent environments
Geert Brethouwer1, Philipp Schlatter1, Yohann Duguet2
1Linné FLOW Centre and Swedish e-Science Research Centre, KTH Mechanics, SE-100 44 Stockholm, Sweden.
Abstract:
Large-scale instabilities occurring in the presence of small-scale turbulent fluctuations are frequently observed in geophysical or astrophysical contexts but are difficult to reproduce in the laboratory. Using extensive numerical simulations, we report here on intense recurrent bursts of turbulence in plane Poiseuille flow rotating about a spanwise axis. A simple model based on the linear instability of the mean flow can predict the structure and time scale of the nearly periodic and self-sustained burst cycles. Poiseuille flow is suggested as a prototype for future studies of low-dimensional dynamics embedded in strongly turbulent environments.
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