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本文考查了在均匀来流中作横向振荡的圆柱体与周围流体之间的能量转移,由此建立了基于受迫振荡实验数据的弹性支撑圆柱体在均匀流中的涡激振动响应预报模型。根据此模型,分析了低质量-阻尼因子圆柱体的涡激振动响应特性。就水中圆柱体涡激振动响应特性相关的几个关键性问题进行了深入的讨论,包括响应振幅的决定因素、附加质量对锁定范围及响应频率的影响。正确理解这些问题对于深水立管涡激振动响应的有效预报至关重要。
This paper examines the energy transfer between the fluid and the surrounding fluid in a uniform flow, and establishes a model for predicting the vortex-induced vibration response of the elastic support cylinder in a uniform flow based on experimental data of forced oscillation. According to this model, the vortex-induced vibration response characteristics of the low mass-damping factor cylinder are analyzed. Several key issues related to the vortex-induced vibration response of water cylinders are discussed in depth, including the determinants of response amplitude and the effect of additional mass on the locking range and response frequency. Correct understanding of these issues is very important for the effective prediction of vortex induced vibration response of deepwater risers.