Koopman analysis by the dynamic mode decomposition in wind engineering

CY Li, Z Chen, X Zhang, KT Tim, C Lin - Journal of Wind Engineering and …, 2023 - Elsevier
The Koopman theory, a concept to globally model nonlinear signals by a linear Hamiltonian,
has been at the frontier of fluid mechanics research for the last decade. Wind engineering …

[HTML][HTML] Order of magnitude increase in power from flow-induced vibrations

JCC Lo, MC Thompson, K Hourigan, J Zhao - Renewable and Sustainable …, 2024 - Elsevier
Natural hydro environments such as rivers and ocean currents provide abundant and
essentially free sources of kinetic energy. Although significant research has been devoted to …

Control of flow-induced vibration of a circular cylinder using a splitter plate

L Zeng, F Zhao, H Wang, Y Liu, H Tang - Physics of Fluids, 2023 - pubs.aip.org
A circular cylinder attached by a rigid splitter plate of different lengths was tested to examine
its effects on the control of flow-induced vibration. Tests were carried out in a closed-loop …

The roles of rigid splitter plates in flow-induced vibration of a circular cylinder

Y Sun, J Wang, D Fan, H Zheng, Z Hu - Physics of Fluids, 2022 - pubs.aip.org
While it is known that rigid splitter plates play significant roles in flow control, the exact roles
of them in flow-induced vibration (FIV) have not been systematically investigated. This has …

Flow-induced vibrations of a D-section prism at a low Reynolds number

W Chen, C Ji, MM Alam, D Xu, H An, F Tong… - Journal of Fluid …, 2022 - cambridge.org
Flow-induced vibrations of a D-section prism at a low Reynolds number Page 1 J. Fluid Mech.
(2022), vol. 941, A52, doi:10.1017/jfm.2022.314 Flow-induced vibrations of a D-section prism at …

Two-degree-of-freedom flow-induced vibrations of a D-section prism

W Chen, MM Alam, Y Li, C Ji - Journal of Fluid Mechanics, 2023 - cambridge.org
This paper presents a comprehensive study of flow-induced vibrations of a D-section prism
with various angles of attack. Furthermore, a wake mode map in the examined parametric …

Decoupling bi-directional fluid–structure interactions by the Koopman theory: Actualizing one-way subcases and the role of crosswind structure motion

Z Chen, Y Wang, S Wang, H Huang, KT Tse, CY Li… - Physics of …, 2022 - pubs.aip.org
We propose a novel thinking of decoupling bi-directional fluid–structure interactions (bi-FSI)
into simpler mono-directional components for analytical insights. The decoupling aims to …

Numerical investigation on flow-induced vibration response of the cylinder inspired by the honeycomb

W Wang, F Zhao - Ocean Engineering, 2023 - Elsevier
The honeycomb-shaped structure has been proved to have good mechanical properties,
and is it possible combining its good mechanical properties together with its flow …

Flow-induced vibrations of elastically-mounted C-and D-section cylinders

G Sharma, H Garg, R Bhardwaj - Journal of Fluids and Structures, 2022 - Elsevier
We numerically study the flow-induced vibration (FIV) response of an elastically-mounted
cylinder in two-dimensional coordinates at Reynolds number of 100. In particular, the effects …

Flow-induced vibrations of a pair of in-line square cylinders

D Kumar, S Sen - Physics of Fluids, 2021 - pubs.aip.org
Flow-induced bidirectional vibrations of two in-line square cylinders of same size and mass
ratio (⁠= 10⁠) are analyzed at Reynolds number, Re= 100. The cylinders are located in the …