Proceedings on Engineering Sciences | 2026
Authors: Annapeh H.F.; Kurushina V.
DOI: 10.24874/PES08.01.001
Journal: Proceedings on Engineering Sciences
Year: 2026
Publisher: Faculty of Engineering, University of Kragujevac
Document Type: Article
Open Access: All Open Access; Gold Open Access; Green Open Access
Cited by: 0
This study investigates vortex-induced vibration (VIV) of two tandem circular cylinders with two degrees of freedom (2DOF) under a pure oscillatory flow. Numerical simulations are performed using a detached eddy simulation solver with the k-ω SST turbulence model, and the results are validated against existing data. The maximum transverse amplitude occurs at a reduced velocity of 10, coinciding with the lock-in regime, while the single isolated cylinder shows a higher amplitude than the tandem setup. Streamwise displacement amplitude exceeds 2.5D for the considered cases. Frequency analysis reveals mode transitions from double to single-frequency modes as the reduced velocity increases. XY trajectory patterns vary with velocity, showing infinity (∞), arc-like, O-shape, and net-like forms. This study enhances understanding of VIV in tandem cylinders and provides insights for engineering applications. © 2026 Published by Faculty of Engineeringg.
Oscillatory flow; Tandem cylinders; Two degree-of-freedom structure; VIV; Vortex-induced vibration