Data-driven stability analysis via the superposition of reduced-order models for the flutter of circular cylinder submerged in three-dimensional spanwise shear inflow at subcritical Reynolds number

• Published in: Physics of fluids (1994) Vol. 34; no. 12
• Main Authors: Cheng, Zhi, Lien, Fue-Sang, Dowell, Earl H., Wang, Ryne, Zhang, Ji Hao
• Format: Journal Article
• Language: English
• Published: Melville American Institute of Physics 01.12.2022
• Subjects: Aerodynamic coefficients; Algorithms; Circular cylinders; Data analysis; Flow generated vibrations; Flow stability; Fluid flow; Flutter; Inflow; Reduced order models; Reynolds number; Stability analysis; Structural models; Structural stability; Three dimensional flow; Two dimensional flow; Vibration analysis

In this paper, we present a novel data-driven theory for the stability analysis of a flow-induced vibration (FIV) system consisting of an elastically mounted circular cylinder submerged in three-dimensional (3D) spanwise shear inflow at a subcritical Reynolds number. The presented data-driven theory...