This study investigates the suppression mechanism of instabilities induced by fluid–structure interactions (FSI) using passive vibration absorption devices, such as nonlinear energy sink (NES). The present FSI framework comprises a low-order phenomenological model, wherein wake effect is modeled classical Van der Pol oscillator. structure represented cylindrical bluff body with degree-of-freedo...

Limited light availability due to insufficient vertical mixing is one of the main drawbacks raceway ponds (RWPs), most common type microalgae cultivation system. In this study, we have investigated application vortex induced vibration (VIV) systems improve in order enhance algal biomass productivity. The system consists a cylinder submerged parallel bottom pond with two springs attached at its ...

Under the actions of ocean currents and/or waves, deep-sea flexible risers are often subject to vortex-induced vibration (VIV). The VIV can lead severe fatigue and structural safety issues caused by oscillatory periodic stress large-amplitude displacement. As have natural modes with lower frequency higher density, a multimode is likely occur in under action currents, which considered as shear f...

When a cylinder is mounted on an elastic support within current, vortex-induced vibrations (VIV) may occur down to Reynolds number ( Re ) close $20$ , based the body diameter $D$ and inflow velocity $U$ ), i.e. below critical value of $47$ reported for onset flow unsteadiness when fixed. The impact forced rotation elastically system behaviour explored numerically $Re \leqslant 30$ over wide ran...

The hydrodynamic and thermal characteristics of a freely vibrating circular cylinder subject to cross buoyancy are numerically investigated at low Reynolds numbers. structural responses onset vortex-induced vibration (VIV) documented over range parameter space, 2.0 ? reduced velocity (Ur) 10.0 , 0.7 Prandtl number (Pr) 0.5 Richardson (Ri) 2.0. fluid coefficients chosen as ( R e ) = 100, mass ra...

This study investigates the potential of vortex-induced vibration (VIV) as a renewable energy source, achieved when fluid flow interacts with bluff body, inducing self-sustained oscillations through vortex shedding in wake. While VIV research has traditionally focused on understanding its mechanisms and mitigating detrimental effects, interest harvesting surged means to convert marine hydrokine...