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Published on: February 13, 2018
Experimental evidence of random shock-wave intermittency
Guillaume Ricard1, Eric Falcon1
1Université Paris Cité, CNRS, MSC, UMR 7057, F-75013 Paris, France.
Abstract:
We report the experimental observation of intermittency in a regime dominated by random shock waves on the surface of a fluid. We achieved such a nondispersive surface-wave field using a magnetic fluid subjected to a high external magnetic field. We found that the small-scale intermittency of the wave-amplitude fluctuations is due to shock waves, leading to much more intense intermittency than previously reported in three-dimensional hydrodynamics turbulence or in wave turbulence. The statistical properties of intermittency are found to be in good agreement with the predictions of a Burgers-like intermittency model. Such experimental evidence of random shock-wave intermittency could lead to applications in various fields.
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