Non-stationary regimes of surface gravity wave turbulence

Bedard, R.; Lukaschuk, S.; Nazarenko, S.

Abstract

We present experimental results about rising and decaying gravity wave turbulence in a large laboratory flume. We consider the time evolution of the wave energy spectral components in ω- and k-domains and demonstrate that emerging wave turbulence can be characterized by two time scales-a short dynamical scale due to nonlinear wave interactions and a longer kinetic time scale characterizing formation of a stationary wave energy spectrum. In the decay regime we observed the maximum of the wave energy spectrum decreasing in time initially as the power law, ∝t-1/2, as predicted by the weak turbulence theory, and then exponentially due to viscous friction.

Citation

Bedard, R., Lukaschuk, S., & Nazarenko, S. (2013). Non-stationary regimes of surface gravity wave turbulence. JETP Letters, 97(8), 459-465. https://doi.org/10.1134/S0021364013080055

• Journal Article Type: Article
• Online Publication Date: Jun 29, 2013
• Publication Date: 2013-06
• Deposit Date: Nov 13, 2014
• Journal: Jetp Letters
• Print ISSN: 0021-3640
• Publisher: Springer Verlag
• Peer Reviewed: Peer Reviewed
• Volume: 97
• Issue: 8
• Pages: 459-465
• DOI: https://doi.org/10.1134/S0021364013080055
• Keywords: surface waves gravity wave turbulence,
• Public URL: https://hull-repository.worktribe.com/output/470499
• Contract Date: Nov 23, 2017