[1]康庄,倪问池,张立健.不同系泊条件下浮力筒涡激运动模型试验[J].哈尔滨工程大学学报,2017,38(12):1823-1827.[doi:10.11990/jheu.201606084]
 KANG Zhuang,NI Wenchi,ZHANG Lijian.An experimental investigation on vortex-induced motion of buoyancy can under various mooring conditions[J].hebgcdxxb,2017,38(12):1823-1827.[doi:10.11990/jheu.201606084]
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不同系泊条件下浮力筒涡激运动模型试验(/HTML)
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《哈尔滨工程大学学报》[ISSN:1006-6977/CN:61-1281/TN]

卷:
38
期数:
2017年12期
页码:
1823-1827
栏目:
出版日期:
2017-12-25

文章信息/Info

Title:
An experimental investigation on vortex-induced motion of buoyancy can under various mooring conditions
作者:
康庄1 倪问池12 张立健1
1. 哈尔滨工程大学 深海工程技术中心, 黑龙江 哈尔滨 150001;
2. 加州大学伯克利分校 土木与环境工程学院, 美国 加利福尼亚 伯克利 94720
Author(s):
KANG Zhuang1 NI Wenchi12 ZHANG Lijian1
1. Deepwater Engineering Research Center, Harbin Engineering University, Harbin 150001, China;
2. School of Civil & Environmental Engineering, University of California, Berkeley 94720, USA
关键词:
小质量比小长细比浮力筒涡激运动频率分析模型试验系泊条件约化速度
分类号:
P756
DOI:
10.11990/jheu.201606084
文献标志码:
A
摘要:
为了研究不同系泊条件下小质量比结构的涡激振动响应规律,本文对质量比为0.422、长细比为7的浮力筒开展了不同系缆绳长度和顶端距水面距离工况下的模型试验,并对其运动轨迹、幅值、频率等参数进行了对比和研究,发现:小质量比与细长比浮力筒的振动频率随约化速度的增大而几乎线性增大,仅在很小的范围“锁定”于固有频率,且横向振幅始终较大,未出现下端分支。实验过程中观察到了明显的艏摇现象,通过对浮力筒艏摇运动特性的研究,发现当约化速度较小时,艏摇运动比较杂乱,其中有一个较大的频率分量与横向振动主频率相等。同时,横向振动也有一个较为明显的频率分量与艏摇运动的主频率相等。当约化速度大于6.5以后,艏摇运动与横向振动都趋于稳定,仅有一个主要频率,且两者频率相等,证实了艏摇运动是由浮力筒两侧漩涡交替脱落形成的压力差引起的。

参考文献/References:

[1] KANG Z, NI W, MA G, et al. A model test investigation on vortex-induced motions of a buoyancy can[J]. Marine structures, 2017, 53:86-104.
[2] KANG Z, JIA L. An experiment study of a cylinder’s two degree of freedom VIV trajectories[J]. Ocean engineering, 2013, 70:129-140.
[3] JAUVTIS N, WILLIAMSON C H K. The effect of two degrees of freedom on vortex-induced vibration at low mass and damping[J]. Journal of fluid mechanics, 2004, 509(509):23-62.
[4] XU J, ZHU R. Numerical simulation of VIV for an elastic mounted on the spring supports with low mass-ratio[J]. Journal of marine sciences & application, 2009, 8(3):237-245.
[5] KANG Z, NI W, SUN L. A numerical investigation on capturing the maximum transverse amplitude in vortex induced vibration for low mass ratio[J]. Marine structures, 2017, 52:94-107.
[6] 唐友刚, 青兆熹, 张杰,等. 深海立管涡激振动预报模型及影响因素[J]. 哈尔滨工程大学学报, 2017, 38(3):338-343.TANG Yougang, QING Zhaoxi, ZHANG Jie, et al. Prediction model and influence factors on vortex-induced vibration of deepwater risers[J]. Journal of Harbin Engineering University, 2017, 38(3):338-343.
[7] GOVARDHAN R, WILLIAMSON C H K. Vortex-induced vibrations of a sphere[J]. Journal of fluid mechanics, 2005, 531(531):11-47.
[8] GOVARDHAN R, WILLIAMSON C H K. Modes of vortex formation and frequency response for a freely vibrating cylinder[J]. J Fluid Mech, 420:85-130.
[9] WILDE J D. Model tests on the vortex induced motions of the air can of a free standing riser system in current[R] Netherlands:Maritime Research Institute, 2007.
[10] 贾鲁生.多边界条件下双自由度圆柱体自激振动试验研究[D].哈尔滨:哈尔滨工程大学, 2012.JIA Lusheng. Investigation on self-excited vibration of 2-D of cylinder under multi boundary conditions[D]. Harbin:Harbin Engineering University, 2012.
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备注/Memo

备注/Memo:
收稿日期:2016-06-26。
基金项目:国家青年自然科学基金项目(51509045);国家留学基金项目(201606680106);中央高校基本科研业务费专项资金资助项目(HEUGIP201702).
作者简介:康庄(1978-),男,教授,博士生导师;倪问池(1991-),男,博士研究生.
通讯作者:倪问池,E-mail:niwenchi@hrbeu.edu.cn.
更新日期/Last Update: 2018-01-13