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Journal Articles Physical Review Letters Year : 2019

Power fluctuations in turbulence

Abstract

To generate or maintain a turbulent flow, one needs to introduce kinetic energy. This energy injection necessarily fluctuates and these power fluctuations act on all turbulent excited length scales. If the power is injected using forces proportional to the velocity, such as those common in shear flows, or with a force acting at the largest scales only, the spectrum of these fluctuations is shown to have a universal inertial range, proportional to the energy spectrum.
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Dates and versions

hal-02134629 , version 1 (20-05-2019)

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Wouter J. T. Bos, Rémi Zamansky. Power fluctuations in turbulence. Physical Review Letters, 2019, 122 (12), pp.1-6. ⟨10.1103/physrevlett.122.124504⟩. ⟨hal-02134629⟩
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