组合三棱柱振子流致振动运动特性分析
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TV131.2+9

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河北省高等学校科学技术研究项目资助(BJK2023099);河北省自然科学基金资助(E2022402110)


Analysis of flow induced motion of combined triangular prism
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    摘要:

    本文以流致振动能量转换系统为基础,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,系统最大振幅比为A*=0.85(K=1400N/m,Ur=7.5)。

    Abstract:

    Based on the energy conversion system of flow induced vibration, this paper tests the combined triangular prism with the section form and stiffness as variables to evaluate the amplitude, frequency and other indicators. The combined triangular prism is selected for model test, as well as the influence of arrangement and stiffness on the combined triangular prism is studied by changing the arrangement of the prisms and system stiffness. The aim of this study 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 Type I prism and Type III prism perform typical vortex induced vibration with the increase of flow velocity. The Type I prism has the best performance with a maximum amplitude ratio of A*=0.85 (K=1400N/m, Ur=7.5).

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练继建,姚 帅,吴志川,等. 组合三棱柱振子流致振动运动特性分析[J]. 科学技术与工程, 2024, 24(15): 6423-6430.
Lian JiJian, Yao Shuai, Wu ZhiChuan, et al. Analysis of flow induced motion of combined triangular prism[J]. Science Technology and Engineering,2024,24(15):6423-6430.

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  • 收稿日期:2023-05-18
  • 最后修改日期:2024-03-19
  • 录用日期:2023-10-24
  • 在线发布日期: 2024-06-04
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