应用数学和力学2026，Vol.47Issue(2)：203-218,16.DOI:10.21656/1000-0887.450338
不同干扰下串列双PTC圆柱的振动及功率稳定性研究
Study on Vibration and Power Stability of Tandem Double PTC Cylinders Under Different Perturbations
摘要
Abstract
The development of ocean energy aligns with the national dual-carbon strategy objectives.The large-scale utilization of VIVACE devices to extract ocean current energy requires the coordinated power generation of multiple oscillators.However,the perturbation effects among multiple oscillators can create a relatively chaotic flow field,resulting in unstable vibration responses of the VIVACE device.To address this issue,a rigid con-necting structure was proposed to mitigate the perturbation caused by flow-induced vibrations.With the RANS method and the Spalart-Allmaras turbulence model,combined with the dynamic meshing and the UDF technolo-gy,the flow-induced vibration responses,vibration stability,and instantaneous output power stability of sepa-rated serial twin PTC cylinders and rigidly connected twin PTC cylinders were simulated under 3 spacing ratios:L=1.5D,L=2.5D,and L=3.5D.The results indicate that,in the rigidly connected case,the vibration amplitude stability will decrease with the spacing ratio.Compared to the separated configuration,the rigidly connected setup has higher vibration stability and instantaneous output power stability as well under all 3 spacing ratios,although the improvement effect diminishes as the spacing ratio increases.A net damping coefficient was intro-duced to assess the energy changes in the system during the vibration process of the separated serial twin PTC cylinders and the rigidly connected serial twin PTC cylinders.The results show that,an unstable net damping coefficient leads to unstable energy in the system,ultimately resulting in unstable vibration responses.关键词
流致振动/串列双PTC圆柱/净阻尼系数/振动稳定性Key words
flow induced vibration/tandem double PTC cylinders/net damping factor/vibration stability分类
数理科学引用本文复制引用
章大海,张帅,刘硕硕,侯啸海,江耀鑫..不同干扰下串列双PTC圆柱的振动及功率稳定性研究[J].应用数学和力学,2026,47(2):203-218,16.基金项目
山东省自然科学基金(ZR2023ME036) （ZR2023ME036）
