STUDY ON VIBRATION RESPONSE CHARACTERISTICS AND OCEAN CURRENT ENERGY CAPTURE EFFICIENCY OF TANDEM THREE-CYLINDER FLOW IN TANDEM

Jia Shanshan; He Haihua; Xu Peng; Li He; Zhang Yuan; Zhang Zhaode

doi:10.19912/j.0254-0096.tynxb.2024-1205

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (4) : 706-712. DOI: 10.19912/j.0254-0096.tynxb.2024-1205

STUDY ON VIBRATION RESPONSE CHARACTERISTICS AND OCEAN CURRENT ENERGY CAPTURE EFFICIENCY OF TANDEM THREE-CYLINDER FLOW IN TANDEM

Jia Shanshan¹, He Haihua², Xu Peng¹, Li He¹, Zhang Yuan¹, Zhang Zhaode³

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Abstract

In order to analyze the complex fluid-structure coupling between fluid flow and the movement of cylindrical clusters, a new method is proposed in this paper to study the effects of different spacing ratios and constraints on the flow induced vibration of a series of three cylinders at subcritical Reynolds number is presented. The transverse flow induced vibration of three equidimensional series cylinders in the reynolds number range of 2.6966×10⁴ to 8.0899×10⁴, spacing ratio range of 1.7 to 5.0 and reduced velocity range of 3.67 to 11 is studied by using three-dimensional numerical method. By comparing dimensionless amplitude, frequency, lift coefficient and captured energy efficiency, the fluid-structure coupling dynamic response characteristics of a series of three cylinders are analyzed. It is found that when the spacing ratio at 3 and the upstream cylinder is fixed, the vibration effect of the middle and downstream cylinder is the strongest. At this time, the region of the upstream cylinder locked by vibration is obviously wider, and the amplitude in the locked region is significantly higher than that in other spacing conditions. It is shown that the vibration effects between multiple cylinders are different with different spacing and constraint conditions.

Key words

ocean current energy / circular cylinders / dynamic response / computational fluid dynamics / fluid-induced vibration / energy capture

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Jia Shanshan, He Haihua, Xu Peng, Li He, Zhang Yuan, Zhang Zhaode. STUDY ON VIBRATION RESPONSE CHARACTERISTICS AND OCEAN CURRENT ENERGY CAPTURE EFFICIENCY OF TANDEM THREE-CYLINDER FLOW IN TANDEM[J]. Acta Energiae Solaris Sinica. 2025, 46(4): 706-712 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1205

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