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Stochastic wake oscillators for multi-degree-of-freedom vortex-induced vibrations of rigid and long flexible cylinders under free-stream turbulence
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DOI：10.1016/j.jfluidstructs.2026.104588.png)
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Abstract
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• Stochastic wake oscillators are implemented for multi-degree-of-freedom VIV analyses. • Incoming turbulent flow velocities are modelled using Ornstein-Uhlenbeck differential equation. • Elastically mounted rigid circular cylinders and long flexible cylindrical structures are considered. • Effects of system fluid-structure parameters and flow turbulence intensity are investigated. • Results highlight quantitative and qualitative influence of free-stream turbulence on VIV responses.
Keywords:
Vortex-induced vibration (VIV)
Cylindrical structure
Stochastic wake oscillator
Free-stream turbulence
Multi-degree-of-freedom response
DOF
Degree-of-freedom
FFT
Fast Fourier Transform
PSD
Power spectral density
RMS
Root-mean-squared
VIV
Vortex-induced vibration
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