线性剪切流下钢悬链式立管涡激振动响应研究

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (3) : 81-90.

振动理论与交叉研究

线性剪切流下钢悬链式立管涡激振动响应研究

马博文*1，2，常杏1，2，陈伟民1，唐文勇2

作者信息 +

Vortex induced vibration response of steel catenary riser under linear shear flow

MA Bowen*1,2, CHANG Xing1,2, CHEN Weimin1, TANG Wenyong2

Author information +

文章历史 +

摘要

基于空间分布的尾流振子模型对细长柔性悬链线立管三维涡激振动响应特性进行数值仿真研究。数值模型考虑了立管局部倾角和流固场相对速度对水动力载荷的影响，将尾流振子与立管运动控制方程耦合，构建了悬链线立管非平面来流下的时域动力学模型，采用二阶精度有限差分法和四阶龙格库塔法求解耦合振动方程。通过将模拟结果与实验结果对比，模型的可靠性得到了一定程度上的验证；随后针对实尺度立管，比较了不同剪切度来流对立管涡激振动幅值、响应传播波形、结构振动频率、锁定区间及流固场能量传递系数的影响。数值结果表明：相比于均匀流，线性剪切流下的立管呈现更复杂的振动响应特性，随着来流剪切度升高，振动幅值逐渐减小，锁定区沿管轴方向呈现区域化特性并伴随显著的多频振动响应。

Abstract

A numerical prediction model is developed to investigate three-dimensional vortex-induced vibration of a long flexible catenary riser. By considering uniform and sheared flows perpendicular to the initial curvature plane of the catenary riser, spatially distributed nonlinear wake oscillators are coupled with equations of catenary riser responses to simulate the fluctuating hydrodynamic lift and drag forces that account for effects of local riser inclinations and relative flow-cylinder velocities. To solve the fluid-structure interaction model, a hybrid scheme of a central finite difference method combined with a fourth-order Runge-Kutta method is utilized. Simulations are performed based on a flexible curved cylinder under a uniform flow and validated against numerical and experimental results in the literature. For a long flexible catenary riser, effects of flow profiles are analyzed by comparing a uniform free stream flow versus linearly sheared flows at various shear parameters in terms of amplitudes, wave patterns, resonant frequencies, lock-in conditions, and energy transfer mechanisms. The overall results highlight the influence of shear parameters on VIV responses. An increased shear parameter leads to lessened response amplitudes but enhanced space-varying lock-in conditions and multi-frequency VIV responses.

导出引用

马博文1, 2, 常杏1, 2, 陈伟民1, 唐文勇2. 线性剪切流下钢悬链式立管涡激振动响应研究[J]. 振动与冲击, 2025, 44(3): 81-90

MA Bowen1, 2, CHANG Xing1, 2, CHEN Weimin1, TANG Wenyong2. Vortex induced vibration response of steel catenary riser under linear shear flow[J]. Journal of Vibration and Shock, 2025, 44(3): 81-90

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