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中文摘要：
基于计算流体动力学（CFD），对二维线性变化的剪切来流作用下拉索横向流致振动响应进行数值计算，分析了不同剪切率与不同折减速度对拉索横向振动响应及其绕流的影响。结果表明：折减速度较大时，来流的剪切率对拉索最大振幅影响明显；折减速度的变化显著影响拉索最大振幅，来流的剪切率、折减速度对拉索流致位移、升力的相位关系及其尾流模态影响较大。
英文摘要：
Based on computational fluid dynamics （CFD）, the numerical simulation on the flow- induced effect of the cable with low mass-ratio and one-degree of freedom （only transverse） under two-dimensional shear flow was conducted. The effects of the different shear ratios and the different reduced velocities on transverse vibration response of a cable and surrounding flow field were studied. The results show that when the reduced velocity remains higher, the shear ratio has a great impact on the maximum vibration amplitude of the cable, and the variation of reduced velocity can obviously influence the maximum vibration amplitude of the cable. Moreover, both shear ratio and reduced velocity have significant effect on wake pattern and the phase portrait between the lift force and the displacement of a cable.
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