Turbulence generation by large-scale extreme vertical drafts and the modulation of local energy dissipation in stably stratified geophysical flows

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چکیده

Stratified flows can develop powerful vertical drafts - resulting from a resonant interaction of gravity waves and turbulent motions when the system explores certain region parameter space which is geophysical interest. These extreme (detected through kurtosis velocity, ${K}_{w}$) do generate turbulence, leading to enhanced local-in-time-and-space kinetic (${\stackrel{\ifmmode \hat{}\else \^{}\fi{}}{\ensuremath{\epsilon}}}_{V}$) potential energy dissipation. They are needed in order for stratified be as efficient homogenous isotropic flow dissipating energy.

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ژورنال

عنوان ژورنال: Physical review fluids

سال: 2022

ISSN: ['2469-9918', '2469-990X']

DOI: https://doi.org/10.1103/physrevfluids.7.033801