Power extraction using flow-induced vibration of a circular cylinder placed near another fixed cylinder
Power extraction using flow-induced vibration of a circular cylinder placed near another fixed cylinder
复制标题
利用放置在另一个固定圆柱体附近的圆柱体的流动引起的振动来提取功率
DOI：
10.1016/j.jsv.2014.01.007
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发表时间：
2014
影响因子：
4.7
通讯作者：
L.A.R. Quadrante
中科院分区：
文献类型：
--
作者：
Nishi;Y.;M. Nishio;Y. Ueno;L.A.R. Quadrante
我们在拖曳水池中进行了一项实验，以研究利用圆柱体的流动引起的振动的能量提取系统的性能。本实验测试了三种不同的情况，涉及相同直径的气缸的以下布置：上游固定-下游可移动布置（情况F）；上游可动-下游固定布置（情况R）；和一个可移动的隔离气缸（情况一）。在情况 F 和 R 中，间隔距离（两个圆柱体中心之间的距离与其直径的比率）固定为 1.30。测量结果表明，案例 F 和 I 产生涡激振动 (VIV) 共振响应，而案例 R 则以超过 9.0 的减速速度产生尾流诱发振动 (WIV)，这明显大于 VIV 响应，从而在发电机中感应出更高的电子功率。因此，在涉及WIV的情况下，一次能量转换效率更高。
We conducted an experiment in a towing tank to investigate the performance of an energy extraction system using the flow-induced vibration of a circular cylinder. This experiment tested three different cases involving the following arrangements of cylinder(s) of identical diameter: the upstream fixed–downstream movable arrangement (case F); the upstream movable–downstream fixed arrangement (case R); and a movable isolated cylinder (case I). In cases F and R, the separation distance (ratio of the distance between the centers of the two cylinders to their diameters) is fixed at 1.30. Measurement results show that while cases F and I generate vortex-induced vibration (VIV) resonance responses, case R yields wake-induced vibration (WIV) at reduced velocity over 9.0, which is significantly larger than that of the VIV response, leading to the induction of higher electronic power in a generator. Accordingly, primary energy conversion efficiency is higher in the case involving WIV.