Primary instability, sensitivity and active control of flow past two tandem circular cylinders

Z Liu, L Zhou, H Tang, Z Wang, F Zhao, X Ji, H Zhang - Ocean Engineering, 2024 - Elsevier
The tandem two-cylinder configuration is frequently employed in engineering structures. Its
fluid force and vortex shedding are significantly greater than those of widely studied single …

Koopman mode analysis on discovering distributed energy transfer of post-transient flutter of a bluff body

Q Zhu, H Li, H Zhu, L Zhou, KT Tse, H Zhang - Ocean Engineering, 2024 - Elsevier
The flutter response of a rectangular cylinder model with an aspect ratio of 5 is investigated
by direct numerical simulation for various Reynolds numbers (Re) and flow angles of attack …

Flow pattern-and forces-susceptibility to small attack angles for a rectangular cylinder

L Zhou, Q Zhu, KT Tse, X Ning, Y Ai, H Zhang - Ocean Engineering, 2024 - Elsevier
This study employs numerical simulation to investigate the two-dimensional flow of a
rectangular cylinder with an aspect ratio of 5, under various flow attack angles (α) and …

Sensitivity-aided active control of flow past twin cylinders

L Zhou, H Li, KT Tim, X He, GYC Maceda… - International Journal of …, 2023 - Elsevier
The flow-induced vibration (FIV) of twin structures always experiences significantly larger
vibration amplitude than that of a single one, which causes severe structural safety …

Intelligent active flow control of long-span bridge deck using deep reinforcement learning integrated transfer learning

X Deng, G Hu, W Chen - Journal of Wind Engineering and Industrial …, 2024 - Elsevier
Aerodynamic forces of the Great Belt Bridge are mitigated using deep reinforcement
learning (DRL) based active flow control (AFC) techniques at a Reynolds number of 5× 1 0 5 …

Effects of spacing ratio on vortex-induced vibration of twin tandem diamond cylinders in a steady flow

W Gu, X Xu, M Jiang, W Yao - Physics of Fluids, 2023 - pubs.aip.org
Vortex-induced vibration of twin tandem square cylinders at an inclined angle of 45 to the
fluid, ie, twin diamond cylinders of mass ratio m*= 3, is numerically investigated at Reynolds …

Characteristics of aerodynamic interference and flow phenomenology around inclined square prisms

Z Chen, S Li, L Zhang, C Yuan, Z Zhao, Y Wu, Y Xu… - Physics of …, 2023 - pubs.aip.org
This study conducts large eddy simulations (LES) to investigate the aerodynamic
interference effects and flow field characteristics of the flow around square cylinders, taking …

Vortex-induced vibration of a sinusoidal wavy cylinder: The effect of wavelength

F Zhao, L Zeng, H Bai, MM Alam, Z Wang, Y Dong… - Physics of …, 2024 - pubs.aip.org
While considerable research has addressed flow around stationary sinusoidal wavy
cylinders, studies on vortex-induced vibration (VIV) of elastic-supported wavy cylinders still …

The flow interference investigation of multi-square prisms under fluid–structure interaction. I. Proximal wake characteristics of tandem square prisms

Z Chen, T Guan, L Zhang, S Li, B Kim, Y Fu, CY Li… - Physics of …, 2024 - pubs.aip.org
This study investigates the aerodynamic characteristics and interference effect of tandem
square prisms in fluid–structure interaction. Using large eddy simulation, three-dimensional …

[HTML][HTML] Deciphering the influence of shape on vortex-induced vibrations: Insight from diamond and equilateral triangle cylinder simulations

AK Sourav, BP Tallapragada - Physics of Fluids, 2023 - pubs.aip.org
In this study, we present a comprehensive numerical investigation on the impact of
geometric shapes on vortex-induced vibrations (VIV). We deploy the OpenFOAM …