التفاصيل البيبلوغرافية
| العنوان: |
Energy and dissipation spectra of waves propagating in the inner surf zone. |
| المؤلفون: |
Bonneton, Philippe |
| المصدر: |
Journal of Fluid Mechanics; 12/25/2023, Vol. 977, pA48-1-A48-25, 35p |
| مصطلحات موضوعية: |
ENERGY dissipation, GRAVITY waves, STRESS waves, SURFACE waves (Seismic waves), WATER depth, HAMBURGERS |
| مستخلص: |
The spectral behaviour of random sawtooth waves propagating in the inner surf zone is investigated in this study. We show that the elevation energy spectrum exhibits a universal shape with an ω-2 tendency in the inertial subrange and an exponential decay in the diffusive subrange (ω being the angular frequency). A theoretical spectrum is derived based on the similarities between sawtooth waves in the inner surf zone and Burgers wave solutions. Very good agreement is shown between this theoretical spectrum and laboratory experiments covering a large range of incident random wave conditions. Additionally, an equation describing the universal shape of the dissipation spectrum is derived. It highlights that the dissipation spectrum is nearly constant in the inertial subrange, consistent with prior laboratory observations. The findings presented in this study can be useful to improve broken wave dissipation parametrizations in stochastic spectral wave models. [ABSTRACT FROM AUTHOR] |
|
Copyright of Journal of Fluid Mechanics is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
