Dynamic behaviors of multiphase vortex-induced vibration for hydropower energy conversion

L Li, B Lu, W Xu, C Wang, J Wu, D Tan - Energy, 2024 - Elsevier
To satisfy the growing electricity demand, continuous and stable hydropower conversion is
particularly critical in tidal power station operation. In the above industrial application …

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 …

Effect of baffles on efficiency of darrieus vertical axis wind turbines equipped with J-type blades

R Farzadi, A Zanj, M Bazargan - Energy, 2024 - Elsevier
This study investigates the effects of incorporating baffles in J-type bladed vertical axis wind
turbines. The objectives are to analyze the behavior of vortices and their impact on turbine …

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 …

High aspect ratio composite wings: geometrically nonlinear aeroelasticity, multi-disciplinary design optimization, manufacturing, and experimental testing

T Farsadi, M Ahmadi, M Sahin, H Haddad Khodaparast… - Aerospace, 2024 - mdpi.com
In the field of aerospace engineering, the design and manufacturing of high aspect ratio
composite wings has become a focal point of innovation and efficiency. These long, slender …

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 …

Effect of number of blades on performance and wake recovery for a vertical axis helical hydrokinetic turbine

KB Reddy, AC Bhosale - Energy, 2024 - Elsevier
Hydrokinetic turbine provides a viable option for tap** energy from free-flowing water,
making it an attractive contributor to the renewable power landscape. This study investigates …

Exploring Vortex–Flame Interactions and Combustion Dynamics in Bluff Body-Stabilized Diffusion Flames: Effects of Incoming Flow Velocity and Oxygen Content

M Chen, M Zhao, Z Wang, X Huang, H Zheng, F Deng - Processes, 2024 - mdpi.com
An afterburner encounters two primary features: high incoming flow velocity and low oxygen
concentration in the incoming airflow, which pose substantial challenges and contribute …

Vortex-induced vibration characteristic and trigger mechanism of semi-closed streamlined box girder trans-sea bridges

Q Duan, C Ma, T Zhang, Z Li - Ocean Engineering, 2024 - Elsevier
In this study, sectional model wind-tunnel tests are conducted to investigate the vortex-
induced vibration (VIV) of semi-closed girders with different aspect ratios. The influencing …

Mitigating the lift of a circular cylinder in wake flow using deep reinforcement learning guided self-rotation

F Zhao, Y Zhou, F Ren, H Tang, Z Wang - Ocean Engineering, 2024 - Elsevier
This study applies deep reinforcement learning (DRL) to reduce lift forces on a circular
object in the wake of another. The proximal policy optimization (PPO) method is utilized to …