تقرير
The energy cascade of surface wave turbulence: toward identifying the active wave coupling
| العنوان: | The energy cascade of surface wave turbulence: toward identifying the active wave coupling |
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| المؤلفون: | Campagne, Antoine, Hassaini, Roumaissa, Redor, Ivan, Sommeria, Joel, Mordant, Nicolas |
| سنة النشر: | 2019 |
| المجموعة: | Nonlinear Sciences Physics (Other) |
| مصطلحات موضوعية: | Physics - Fluid Dynamics, Nonlinear Sciences - Chaotic Dynamics |
| الوصف: | We investigate experimentally turbulence of surface gravity waves in the Coriolis facility in Grenoble by using both high sensitivity local probes and a time and space resolved stereoscopic reconstruction of the water surface. We show that the water deformation is made of the superposition of weakly nonlinear waves following the linear dispersion relation and of bound waves resulting from non resonant triadic interaction. Although the theory predicts a 4-wave resonant coupling supporting the presence of an inverse cascade of wave action, we do not observe such inverse cascade. We investigate 4-wave coupling by computing the tricoherence i.e. 4-wave correlations. We observed very weak values of the tricoherence at the frequencies excited on the linear dispersion relation that are consistent with the hypothesis of weak coupling underlying the weak turbulence theory. Comment: proceedings of the Euromech-Ercoftac workshop "Turbulent Cascades II" organized in Ecole Centrale de Lyon in december 2017 |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1902.08013 |
| رقم الأكسشن: | edsarx.1902.08013 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |