Statistics of Lagrangian trajectories in a rotating turbulent flow.
basic_science · Level V
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- Record sourced from PubMed, PMID 31771019.
- Also identified by DOI 10.1103/PhysRevE.100.043110.
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Abstract
We investigate the Lagrangian statistics of three-dimensional rotating turbulent flows through direct numerical simulations. We find that the emergence of coherent vortical structures because of the Coriolis force leads to a suppression of the "flight-crash" events reported by Xu et al. [Proc. Natl. Acad. Sci. (USA) 111, 7558 (2014)PNASA60027-842410.1073/pnas.1321682111]. We perform systematic studies to trace the origins of this suppression in the emergent geometry of the flow and show why such a Lagrangian measure of irreversibility may fail in the presence of rotation.