圆柱涡激振动附加质量系数的实验研究

IF 0.7 4区工程技术 Q4 ENGINEERING, MARINE

International Journal of Maritime Engineering Pub Date : 2023-04-03 DOI:10.5750/ijme.v164ia4.817

J. Gu

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引用次数: 0

摘要

本文在波流通道中进行了圆柱体纵横比为100的实验研究。将FBG传感器安装在圆柱体上，用于捕捉振动信号，并使用两个高精度波纹管式传感器监测支撑力的波动，最后采用模态分析方法计算圆柱体的动态响应。评价了流速、质量比和圆柱体顶部张力对振幅比、频率比和附加质量系数的影响。结果表明，顶部张力对振幅的影响较大；附加质量系数与外部流速呈非线性关系。当降低的速度增加时，增加的质量系数减小。在特定的降低速度下，当顶部张力增加或质量比增加时，增加的质量系数减小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

AN EXPERIMENTAL STUDY ON ADDED MASS COEFFICIENT OF VORTEX-INDUCED VIBRATION OF A CIRCULAR CYLINDER

In this paper, an experiment study with aspect ratio 100 of a circular cylinder was conducted in a wave-current channel. The FBG sensors were attached on the circular cylinder which are used to capture vibration signal, two high-precision bellows type sensors were used to monitor fluctuant support force, and the dynamic response of circular cylinder was finally calculated by modal analysis method. The effect of flow velocity, mass ratio and top tension of circular cylinder on the amplitude ratio, frequency ratio and added mass coefficient was evaluated. The results showed that top tension had a greater influence on the amplitude; the added mass coefficient demonstrated a nonlinear relationship with external flow velocity. The added mass coefficient decreases when the reduced velocity increases. At a particular reduced velocity, the added mass coefficient decreases when the top tension increases or mass ratio increases.

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来源期刊

International Journal of Maritime Engineering ENGINEERING, MARINE-

CiteScore

1.20

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The International Journal of Maritime Engineering (IJME) provides a forum for the reporting and discussion on technical and scientific issues associated with the design and construction of commercial marine vessels . Contributions in the form of papers and notes, together with discussion on published papers are welcomed.