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Article Dans Une Revue EPL - Europhysics Letters Année : 2022

Statistics of phase fluctuations of an acoustic wave propagating through a turbulent flow

Résumé

Abstract We investigate the statistics of phase fluctuations of an acoustic wave propagating through a turbulent flow in line of sight (LOS) configuration. Experiments are performed on a closed von Kármán swirling flow whose boundaries are maintained at a constant temperature. In particular, we analyze the root mean square (RMS) and the power spectrum density (PSD) of phase fluctuations. A model is developed and analytical predictions obtained for these quantities using geometrical acoustics are shown to be in agreement with experimental observations.
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hal-03966032 , version 1 (31-01-2023)

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G. Prabhudesai, Stéphane Perrard, F. Pétrélis, S. Fauve. Statistics of phase fluctuations of an acoustic wave propagating through a turbulent flow. EPL - Europhysics Letters, 2022, 140 (4), pp.43001. ⟨10.1209/0295-5075/aca25f⟩. ⟨hal-03966032⟩
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