تقرير
Forced and natural dynamics of a clamped flexible fiber in wall turbulence
| العنوان: | Forced and natural dynamics of a clamped flexible fiber in wall turbulence |
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| المؤلفون: | Rota, Giulio Foggi, Koseki, Morie, Agrawal, Riya, Olivieri, Stefano, Rosti, Marco Edoardo |
| المصدر: | Physical Review Fluids 9, L012601 (2024) |
| سنة النشر: | 2023 |
| المجموعة: | Physics (Other) |
| مصطلحات موضوعية: | Physics - Fluid Dynamics |
| الوصف: | We characterize the dynamical behavior of a clamped flexible fiber immersed in wall turbulence over a wide range of natural frequencies by means of direct numerical simulations. Only two flapping states are possible: one where the fiber oscillates at the characteristic frequency of the largest turbulent eddies and another where the natural structural response dominates. The former is obtained in the more flexible cases, while the latter in the more rigid ones. We observe here for the first time that in the turbulence dominated regime the fiber always sways at a frequency proportional to the largest scale of the flow, regardless of its structural parameters. The hindrance of the clamp to the wall prevents the synchronization of the fiber with turbulent eddies of comparable size. Comment: 6+4 pages, 6+3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevFluids.9.L012601 |
| URL الوصول: | http://arxiv.org/abs/2310.14574 |
| رقم الأكسشن: | edsarx.2310.14574 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevFluids.9.L012601 |
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