| 抑制涡激振动的螺旋列板设计参数研究 |
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| 引用本文： | 沙 勇,曹 静,张恩勇,周巍伟,陈严飞. 抑制涡激振动的螺旋列板设计参数研究[J]. 海洋工程, 2013, 31(1): 43-48 |
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| 作者姓名： | 沙 勇 曹 静 张恩勇 周巍伟 陈严飞 |
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| 作者单位： | 中海油研究总院 |
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| 基金项目： | 国家科技重大专项课题资助项目(2011ZX05026-005) |
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| 摘 要： | 基于水池模型实验结果和工程设计经验,结合国内外试验数据,着重分析用于抑制海洋立管涡激振动的螺旋列板几何参数(鳍高和螺距)及覆盖率对立管涡激振动的影响;并对水动力直径和水动力系数的选取对预报涡激振动的影响进行了分析,进而提出了适合于海洋立管工程应用的螺旋列板几何和设计参数选取的建议,为螺旋列板工程应用、海洋立管强度和疲劳设计提供参考。
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| 关 键 词： | 螺旋列板 涡激振动 海洋立管 几何参数 水动力系数 |
| 收稿时间： | 2011-09-24 |
| 修稿时间： | 2012-04-18 |
Helical strakes for marine risers VIV suppression and its design parameters selection |
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| SHA Yong,CAO Jing,ZHANG En-yong,ZHOU Wei-wei and CHEN Yan-fei. Helical strakes for marine risers VIV suppression and its design parameters selection[J]. The Ocean Engineering, 2013, 31(1): 43-48 |
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| Authors: | SHA Yong CAO Jing ZHANG En-yong ZHOU Wei-wei CHEN Yan-fei |
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| Affiliation: | (CNOOC Research Institute,Beijing 100027,China) |
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| Abstract: | A mathematical equation for vibration of submerged floating tunnel tether under the effects of earthquake and parametric excitation is presented. Multi-step Galerkin method is used to simplify this equation and the fourth-order Runge-Kuta integration method is used for numerical analysis. Finally, vibration response of submerged floating tunnel tether subjected to earthquake and parametric excitation is analyzed in a few numerical examples. The results show that the vibration response of tether varies with the seismic wave type; the steady maximum mid-span displacement of tether subjected to seismic wave keeps constant when parametric resonance takes place; the transient maximum mid-span displacement of tether is related to the peak value of input seismic wave acceleration. |
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| Keywords: | helical strake vortex induced vibration marine riser geometric parameter hydrodynamic coefficients |
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