Vortex-induced vibrations of a top tensioned riser subjected to flows with spanwise varying directions

Y Qu, P Wang, S Fu, M Zhao - International Journal of Mechanical Sciences, 2023 - Elsevier
Vortex-induced vibrations (VIVs) of a top tensioned riser (TTR) subjected to flows with
spanwise varying directions have been simulated and studied in this paper. The riser is …

[HTML][HTML] Prediction model for multidirectional vortex-induced vibrations of catenary riser in convex/concave and perpendicular flows

B Ma, N Srinil - Journal of Fluids and Structures, 2023 - Elsevier
This study presents an advanced numerical prediction model based on nonlinear wake
oscillators for the investigation of multidirectional vortex-induced vibration (VIV) responses of …

Vortex-induced vibration of a flexible fluid-conveying riser due to vessel motion

J Duan, J Zhou, X Wang, Y You - International Journal of Mechanical …, 2022 - Elsevier
As vessel motion and internal flow can exert impact on vortex-induced vibration (VIV) of
flexible risers, it is of great significance to take these two factors into consideration while VIV …

Optimal energy harvesting efficiency from vortex-induced vibration of a circular cylinder

P Han, Q Huang, G Pan, D Qin, W Wang… - Ocean …, 2023 - Elsevier
This work applies a combined approach, based on a reduced-order model (ROM) together
with experiments and direct numerical simulations, to investigate the optimal efficiency of …

Three-dimensional nonlinear vortex-induced vibrations of top-tension risers considering platform motion

B Zhang, Y Chai, F Li, Y Chen - Ocean Engineering, 2022 - Elsevier
Abstract A novel three-dimensional (3-D) dynamic model considering nonlinearity of tension
is proposed to explore in-line (IL), cross-flow (CF) and axial (AX) vortex-induced vibration …

Coupling effect of time-varying axial tension and combined unsteady flow on vortex-induced vibration of flexible risers

X Li, Y Yuan, Z Duan, H Xue, W Tang - Ocean Engineering, 2023 - Elsevier
The surge and heave motions of the floating platform have a non-negligible effect on vortex-
induced vibration (VIV) of marine risers, which generates time-varying axial tension of risers …

Numerical investigation of VIV responses of the flexible riser system modelled as tensioned cable subjected to shear flow

RP Kumar, S Nallayarasu - Ocean Engineering, 2022 - Elsevier
The crossflow vortex-induced vibration (VIV) responses of the tensioned cable subjected to
the sheared flow velocity profile are investigated numerically using the wake oscillator …

Application of a modified wake oscillator model to vortex-induced vibration of a free-hanging riser subjected to vessel motion

Y Qu, S Fu, Y Xu, J Huang - Ocean Engineering, 2022 - Elsevier
A modified wake oscillator model for modelling vortex-induced vibrations (VIVs) of a free-
hanging riser subjected to vessel motion is presented. Different from the conventional wake …

Multi-degree of freedom nonlinear energy sinks for passive control of vortex-induced vibrations in a sprung cylinder

JAI da Silva, FD Marques - Acta Mechanica, 2021 - Springer
The application of multi-degree of freedom nonlinear energy sinks (MDOF-NES) to control
the vortex-induced vibrations of a sprung cylinder passively is investigated in this paper. The …

Modelling of wake-induced vibrations of tandem cylinders with a nonlinear wake-deficit oscillator

B Soares, N Srinil - Journal of Fluids and Structures, 2021 - Elsevier
For a pair of elastically mounted circular cylinders in a tandem configuration, the
downstream cylinder may experience the wake-induced vibration (WIV) due to the …