以流致振动能量转换系统(flow induced motion energy conversion system,FIMECS)为基础,以截面形式和刚度为变量针对组合三棱柱振子进行试验,评估振幅、频率等指标.试验选取了组合三棱柱振子进行了模型试验,通过改变截面排布形式以及系统刚度来研究截面布局、刚度对组合三棱柱振子的影响.该研究旨在探究组合振子流致振动的最佳振动条件,为后续多振子流致振动研究扩展思路.试验结果表明:三种不同排布形式的组合振子,在不同刚度工况下都有较好的振动效果,Ⅰ型和Ⅲ型振子振动随流速变化表现为典型的涡激振动,Ⅰ型排布振子具有最好的振动表现.
Abstract
Based on the flow induced motion energy conversion system,the combined triangular prisms with the section form and stiffness as variables to evaluate the amplitude,frequency and other indicators was studied.The combined triangular prisms were selected for model test,as well as the influence of arrangement and stiffness on the combined triangular prisms were studied by changing the arrangement of the prisms and system stiffness.The aim is to explore the optimal condition for flow induced motion of the three triangular prisms in different arrangements,and to expand ideas for subsequent research on flow induced motion of multiple oscillators.The experimental results show that all the combined triangular prisms have good performance with different stiffness.Both the motion of typeⅠ prism and type Ⅲ prism perform typical vortex induced vibration with the increase of flow velocity,the type I prism has the best performance.
关键词
海流能利用/流致振动/组合三棱柱/涡激振动/振动响应
Key words
ocean current energy utilization/flow induced motion/combined triangular prism/vortex-induced vibration/oscillation response
维普
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