Abstract
Our recent experimental investigations of flexible side-by-side blades under both steady and unsteady flows have observed flutter in both scenarios. Flutter significantly impacts blade kinematics and the hydrodynamic drag experienced by the blades. Our numerical approach [1], utilizing the reactive force model, successfully reproduces flutter phenomena. In contrast, the traditional Morison’s equation fails to trigger flutter. In the static regime where flutter does not occur, the bulk drag coefficients calibrated from experiments in steady and unsteady flows can be unified through an effective Cauchy number, allowing for the use of analytical models developed for steady flows in unsteady flows. In the flutter regime, using the bulk drag coefficient from steady flows underestimates the drag load in oscillatory flow.
Original language | English |
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Title of host publication | Proceedings of 40th International Workshop on Water Waves and Floating Bodies |
Number of pages | 4 |
Publisher | IWWWFB |
Publication date | 2025 |
Publication status | Published - 2025 |
Event | 40th International Workshop on Water Waves and Floating Bodies - Shanghai, China Duration: 11 May 2025 → 14 May 2025 |
Conference
Conference | 40th International Workshop on Water Waves and Floating Bodies |
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Country/Territory | China |
City | Shanghai |
Period | 11/05/2025 → 14/05/2025 |