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arXiv · 1609.03284

Enhanced azimuthal rotation of the large-scale flow through stochastic cessations in turbulent rotating convection with large Rossby numbers

Jin-Qiang Zhong·Hui-Min Li·Xue-ying Wang
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Abstract

We present measurements of the azimuthal orientation θ(t) and thermal amplitude δ(t) of the large-scale circulation (LSC) of turbulent rotating convection within an unprecedented large Rossby number range 1 70. We identify the mechanism through which the mean retrograde rotation speed can be enhanced by stochastic cessations in the presence of weak Coriolis force, and show that a low-dimensional, stochastic model provides predictions of the observed large-scale flow dynamics and interprets its retrograde rotation.

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Jin-Qiang Zhong, Hui-Min Li, Xue-ying Wang. 2016-09-12. Enhanced azimuthal rotation of the large-scale flow through stochastic cessations in turbulent rotating convection with large Rossby numbers. https://doi.org/10.1103/physrevfluids.2.044602

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