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Weak turbulence for a vibrating plate: Can one hear a Kolmogorov spectrum?

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2006-07-14
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Düring, Gustavo
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Weak turbulence for a vibrating plate: Can one hear a Kolmogorov spectrum?
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Author
  • Düring, Gustavo;
  • Josserand, Christophe;
  • Rica, Sergio;
Abstract
We study the long-time evolution of waves of a thin elastic plate in the limit of small deformation so that modes of oscillations interact weakly. According to the theory of weak turbulence (successfully applied in the past to plasma, optics, and hydrodynamic waves), this nonlinear wave system evolves at long times with a slow transfer of energy from one mode to another. We derive a kinetic equation for the spectral transfer in terms of the second order moment. We show that such a theory describes the approach to an equilibrium wave spectrum and represents also an energy cascade, often called the Kolmogorov-Zakharov spectrum. We perform numerical simulations that confirm this scenario.
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URI: https://repositorio.uchile.cl/handle/2250/124840
ISSN: 0031-9007
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PHYSICAL REVIEW LETTERS Volume: 97 Issue: 2 Article Number: 025503 Published: JUL 14 2006
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