Active learning Active learning
Control Dynamics and control
FSI Fluid–structure interaction
Acoustics Acoustics and vibrations

Vortex-induced vibration (VIV) is of practical importance in flow past tall buildings and chimneys, heat-exchanger tubes in nuclear power plants, power transmission lines, and off-shore structures. Current approaches to suppress or enhance VIV generally lead to excessive power requirements or structural issues caused by external appendages. To combat this, we propose coupling the structure with a strongly nonlinear and dissipative internal subsystem, dubbed “nonlinear energy sink” (NES). The NES gives rise to a variety of phenomena not seen in NES-less VIV, including wake stabilization, vibration suppresion, drag reduction, and efficient energy harvesting.

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On/off switching of VIV: Physical Review Fluids 5, 023902 (2020)
Energy harvesting in turbulent flow: Nonlinear Dynamics 9, 563–609 (2020)
Manifold analysis of suppression mechanisms: Journal of Applied Mechanics 84, 081003 (2017)