We show how fully developed vortex-induced vibration (VIV) of a linearly sprung circular cylinder can be completely suppressed, i.e., driven to zero asymptotically in time, by release of a rotational nonlinear energy sink, consisting of a mass rotating about the axis of the cylinder and a dissipative element damping the rotational motion of the mass. (The nonlinear energy sink is located either inside the cylinder or beyond the spanwise extent of the flow, with which it thus interacts only through inertial coupling to the rectilinear motion of the cylinder.) We also show that VIV can be turned on by locking up the rotating mass. Once VIV is suppressed or turned on, no further action or energy input is required. Thus, this approach provides a true switch. Applications for flow control and for turning mixing on or off are discussed.

中文翻译：

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通过锁定或释放旋转的非线性能量吸收器，可对通过圆柱体的横流中的涡流脱落和涡流引起的振动进行开/关切换

我们展示了如何通过释放旋转非线性能量宿来完全抑制线性弹跳圆柱体的充分发展的涡激振动（VIV），即在时间上渐近地将其驱动为零，该非线性能量宿由质量组成，绕质量轴旋转。圆柱体和消散质量的旋转运动的耗散元件。（非线性能量吸收器位于圆柱体内部，或者位于流的跨度范围之外，因此，它只能通过惯性耦合到圆柱体的直线运动来与之相互作用。）我们还表明，可以通过锁定来打开VIV旋转的质量。一旦VIV被抑制或打开，就无需进一步的动作或能量输入。因此，这种方法提供了一个真正的开关。讨论了流量控制以及打开或关闭混合的应用。