Marine energy harvesting from tidal currents and offshore winds: A 2-DOF system based on flow-induced vibrations

Liu，Jinlong1; Bao，Bin1,2; Chen，Jiatong1; Wu，Yufei2; Wang，Quan1,3

2023-09-01

10.1016/j.nanoen.2023.108664

Nano Energy   影响因子和分区

2211-2855

2211-3282

Owing to the effectiveness in addressing the challenges posed by the uncertainty and instantaneous volatility of renewable energy, the complementary exploitation of diverse energy sources has received considerable attention from researchers worldwide. In this context, this study proposes a two-degree-of-freedom marine energy harvesting system to concurrently extract energy from tidal currents and offshore winds. The proposed energy-harvesting scheme consists of two mechanically linked oscillators with alternative bluff bodies, capable of scavenging multiple forms of fluid energy based on flow-induced vibrations. An associated solution method for the fluid-structure interaction was numerically developed to investigate the dynamical response and energy-harnessing performance of the proposed system in detail. The simulation results demonstrated two typical working modes that occur under various inflow conditions. The 1 mode is used for energy harvesting, whereas the 2 mode is used for vibration alleviation. These modes can be used to promote the converted power and vibration reliability of the proposed system. In contrast to the conventional one-degree-of-freedom energy harvester, the proposed system demonstrated an improved converted power, increasing from 39.13 W to 44.18 W, and a reduced maximum displacement, decreasing from 1.98 m to 1.02 m, exhibiting superior comprehensive performance in terms of converted power, energy conversion efficiency, adaptability to inflow velocity, vibration reliability, and power mix flexibility. Hence, the proposed system offers a novel perspective for the development and implementation of marine energy-harvesting technologies.

Flow-induced vibration Marine energy harvester Offshore wind Tidal current Two-degree-of-freedom system

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China[52005242];

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:001039655200001

ELSEVIER

20232814374809

Arctic engineering ; Degrees of freedom (mechanics) ; Energy conversion efficiency ; Fluid structure interaction ; Ocean currents ; Offshore oil well production ; Tidal power plants ; Tidal stream ; Vibrations (mechanical)

Seawater, Tides and Waves:471.4 ; Oil Field Production Operations:511.1 ; Energy Conservation:525.2 ; Energy Conversion Issues:525.5 ; Tidal Power Plants:611.2 ; Fluid Flow, General:631.1 ; Mechanics:931.1

2-s2.0-85164221156

Scopus

1.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering,Shenzhen University,Shenzhen,518060,China
3.Department of Civil and Environmental Engineering,Shantou University,Shantou,515063,China

Liu，Jinlong,Bao，Bin,Chen，Jiatong,et al. Marine energy harvesting from tidal currents and offshore winds: A 2-DOF system based on flow-induced vibrations[J]. Nano Energy,2023,114.

Liu，Jinlong,Bao，Bin,Chen，Jiatong,Wu，Yufei,&Wang，Quan.(2023).Marine energy harvesting from tidal currents and offshore winds: A 2-DOF system based on flow-induced vibrations.Nano Energy,114.

Liu，Jinlong,et al."Marine energy harvesting from tidal currents and offshore winds: A 2-DOF system based on flow-induced vibrations".Nano Energy 114(2023).