Energy transfer, multistability, and chaos in coupled vortex-induced vibration harvesters: a semi-analytical approach
Artykuł w czasopiśmie
MNiSW
140
Lista 2024
| Status: | |
| Autorzy: | Maity Sudipta, Litak Grzegorz, Ali Shaikh Faruque |
| Dyscypliny: | |
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| Rok wydania: | 2026 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 114 |
| Numer artykułu: | 1098 |
| Strony: | 1 - 35 |
| Impact Factor: | 5,7 |
| Efekt badań statutowych | NIE |
| Finansowanie: | SM received scholarship from Ministry of Education, India. GL was supported by the National Science Centre, Poland under the OPUS Call in the Weave program under Project No. 2023/51/I/ST8/0 2739. The authors confirm that there is no other separate funding for the research reported in the work. |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| This study investigates the complex fluid–structure interactions of a novel system of coupled Vortex-Induced Vibration Energy Harvesters (VIVEHs) for low-velocity flows. To effectively resolve this generic problem and capture essential nonlinear dynamics that conventional time-marching methods often overlook, we develop a comprehensive semi-analytical framework. The system exhibits amplitude jumps, energy transfer between the wake and structure, and chaos. To examine these phenomena, Incremental Harmonic Balance (IHB), Complexification-Averaging (CXA)-based Slow Invariant Manifold (SIM) analysis, and Melnikov theory are applied, respectively. Unlike Vortex-Induced Vibration (VIV) studies neglecting synchronisation, this work reveals that lock-in is governed by non-synchronised beating and directional structure-wake energy flow, identified via SIM analysis. This uniquely characterises bifurcation route to quasi-periodic beating. Furthermore, IHB analysis identifies hardening ground springs as optimal, utilising stronger aerodynamic forces to shift lock-in regions, increasing amplitude and bandwidth for energy capture. Finally, we show that cubic coupling leads to chaos. Additionally, we analytically establish the critical forcing thresholds required for inter-well chaos in bistable supports. Beyond VIVEHs, this work provides a generalised framework for tailoring nonlinearity in coupled oscillatory systems, extending its utility to aeroelastic flutter suppression and wave energy conversion. |
