Vortex-induced vibrations are often unwanted as they can lead to catastrophic failure of the associated structures, warranting countermeasures to mitigate or suppress these vibrations. Due to the nature of nonlinearities in fluid–structure interaction (FSI) problems, analytical solution techniques for FSI problems have limited applicability at best. On the other hand, the numerical solution of vortex-induced vibrations is quite challenging, especially for problems undergoing large structural deformations, let alone the simulation of effective control techniques for suppressing unwanted vibrations. In this work, a robust and computationally efficient simulation framework is proposed to simulate fluid–structure–control interactions problems involving rigid or flexible structures. The effectiveness of the proposed framework in designing effective controller mechanisms for controlling the onset as well as the amplitude of vortex-induced vibrations is illustrated by studying the examples of lock-in of a circular cylinder, galloping of a square body and vortex-induced vibrations of a flexible, lightweight beam under different parameter settings for the controllers.
Kadapa, C. (2022). A Unified Simulation Framework for Fluid–Structure–Control Interaction Problems with Rigid and Flexible Structures. International Journal of Computational Methods, 19(01), Article 2150052. https://doi.org/10.1142/s0219876221500523