潮流能转换装置串列双圆柱振子流致振动振幅响应研究

STUDY OF AMPLITUDE RESPONSE OF FLOW-INDUCED VIBRATION OF TANDEM DOUBLE-CYLINDERICAL OSCILLATORS IN TIDAL CURRENT ENERGY CONVERTER

合理的排布方式可显著提高流致振动潮流能装置阵列的总体转换效率。针对串列双圆柱振子排布方式流致振动潮流能转换装置,利用ADINA软件对不同参变量下等直径串列双圆柱流致振动振幅响应进行数值模拟,得到不同间距、不同流速、不同雷诺数条件下,上下游圆柱振幅响应规律以及尾流模式和位移时程曲线。制作双振子潮流能装置模型,进行水槽试验,试验结果与数值结果的变化趋势基本吻合。结果表明,在振子间距2D的排布方式下,上下游振子振幅值最大且均大于单振子振幅。

The overall conversion efficiency of flow-induced vibration tidal energy device arrays with reasonable arrangement can be significantly improved.Aiming at flow-induced vibration tidal current energy conversion device with arrangement of tandem double-cylinder oscillators,ADINA software is used to carry out numerical simulation of amplitude response of flow-induced vibration with equal diameter tandem double-cylinder under different parameters,the amplitude response rules of up and down-stream cylinders,wake pattern and displacement time travel curves under different spacing,different flow rates and different Reynolds numbers are obtained.The two-oscillator tidal current energy converter model is manufactured and the experiment in flume is performed,the experiment results are in good agreement with the numerical results.The results show that the amplitudes of upstream and downstream oscillators reach maximum in the arrangement of the oscillators spacing 2 D,and both are greater than the amplitude of the single oscillator.