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弹性支撑圆柱绕流稳定性分析

李新涛 张伟伟 蒋跃文 叶正寅

李新涛, 张伟伟, 蒋跃文, 叶正寅. 弹性支撑圆柱绕流稳定性分析[J]. 力学学报, 2015, 47(5): 874-880. doi: 10.6052/0459-1879-14-307
引用本文: 李新涛, 张伟伟, 蒋跃文, 叶正寅. 弹性支撑圆柱绕流稳定性分析[J]. 力学学报, 2015, 47(5): 874-880. doi: 10.6052/0459-1879-14-307
Li Xintao, Zhang Weiwei, Jiang Yuewen, Ye Zhengyin. STABILITY ANALYSIS OF FLOW PAST AN ELASTICALLY-SUSPENDED CIRCULAR CYLINDER[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(5): 874-880. doi: 10.6052/0459-1879-14-307
Citation: Li Xintao, Zhang Weiwei, Jiang Yuewen, Ye Zhengyin. STABILITY ANALYSIS OF FLOW PAST AN ELASTICALLY-SUSPENDED CIRCULAR CYLINDER[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(5): 874-880. doi: 10.6052/0459-1879-14-307

弹性支撑圆柱绕流稳定性分析

doi: 10.6052/0459-1879-14-307
基金项目: 国家自然科学基金(11072199,11172237),教育部“新世纪优秀人才支持计划”(NCET-13-0478)和陕西省“青年科技新星”计划等资助项目.
详细信息
    通讯作者:

    张伟伟,教授,主要研究方向:非定常空气动力学、气动弹性力学及流动控制.E-mail:aeroelastic@nwpu.edu.cn

  • 中图分类号: V211.3

STABILITY ANALYSIS OF FLOW PAST AN ELASTICALLY-SUSPENDED CIRCULAR CYLINDER

Funds: The project was supported by the National Natural Science Foundation of China (11072199, 11172237), Program for New Century Excellent Talents in University (NCET-13-0478) and the Youth Nova of Science and Technology of Shanxi Province.
  • 摘要: 基于CFD 技术,采用系统辨识方法,建立了亚临界雷诺数(Re < 47) 下绕圆柱流动的非定常气动力模型(reduced order model, ROM). 耦合结构运动方程和降阶气动力模型,建立了弹性支撑圆柱绕流的稳定性分析模型. 算例分析了亚临界雷诺数下,结构固有频率、质量比等参数以及支撑方式对弹性系统稳定性的影响. 对于单自由度横向支撑圆柱,当结构固有频率趋近流动最不稳定模态频率时,弹性系统会在一定频率范围内失稳,这种现象最低可在Re~20 时出现. 旋转自由度的释放能够进一步降低系统的稳定性,可将临界雷诺数进一步降低至18 左右. ROM 方法不仅具有很高的效率,而且清晰地指出了弹性系统失稳的根本原因:流动模态和结构模态耦合作用导致结构模态失稳所致. 因此,失稳状态下系统振荡频率锁定于结构固有频率. 基于ROM 技术预测的失稳边界与直接CFD/CSD 仿真结果吻合,证明了该方法的正确性和精度.

     

  • Williamson CHK. Vortex dynamics in the cylinder wake. Annual Review of Fluid Mechanics, 1996, 28(1): 477-539  
    陈文曲, 任安禄, 李广望. 串列双圆柱绕流下游圆柱两自由度涡致振动研究. 力学学报, 2004, 36(6): 732-738 (Chen Wenqu, Ren Anlu, Li Guangwang. The numerical study of two-degree of freedom vortex-induced vibrations of the downstream cylinder in tandem arrangement. Chinese Journal of Theoretical and Applied Mechanics, 2004, 36(6): 732-738 (in Chinese))
    宋芳, 林黎明, 凌国灿. 圆柱涡激振动的结构-尾流振子耦合模型研究. 力学学报, 2010, 42(3): 357-365 (Song Fang, Lin Liming, Lin Guocan. The study of vortex-induced vibrations by computation using coupling model of structure and wake oscillator. Chinese Journal of Theoretical and Applied Mechanics, 2010, 42(3): 357-365 (in Chinese))
    王俊高, 付世晓, 许玉旺等. 正弦振荡来流下柔性立管涡激振动发展过程. 力学学报, 2014, 46(2): 173-182 (Wang Jungao, Fu shixiao, Xu yuwang, et al. VIV development process of a flexible cylinder under oscillatory flow. Chinese Journal of Theoretical and Applied Mechanics, 2014, 46(2): 173-182 (in Chinese))
    Bearman PW. Circular cylinder wakes and vortex-induced vibrations. Journal of Fluids and Structures, 2011, 27(5): 648-658
    Williamson CHK, Govardhan R. Vortex-induced vibrations. Annual Review of Fluid Mechanics, 2004, 36: 413-455  
    Cossu C, Morino L. On the instability of a spring-mounted circular cylinder in a viscous flow at low Reynolds numbers. Journal of Fluids and Structures, 2000, 14(2): 183-196  
    Mittal S, Singh S. Vortex-induced vibrations at subcritical Re. Journal of Fluid Mechanics, 2005, 534: 185-194  
    张伟伟, 叶正寅. 基于非定常气动力辨识技术的气动弹性数值模拟. 航空学报, 2006, 27(4): 579-583 (Zhang Weiwei, Ye Zhengyin. Numerical simulation of aeroelasticity basing on identification technology of unsteady aerodynamic loads. Acta Aeronautica et Astronautica Sinica, 2006, 27(4): 579-583 (in Chinese))
    张伟伟, 叶正寅, 杨青. 基于 ROM 技术的阵风响应分析方法. 力学学报, 2008, 40(5): 593-598 (Zhang Weiwei, Ye Zhengyin, Yang Qing. Gust response analysis using CFD-based reduced order models. Chinese Journal of Theoretical and Applied Mechanics, 2008, 40(5): 593-598 (in Chinese))
    Cowan TJ, Arena AS, Gupta KK. Accelerating computational fluid dynamics based aeroelastic predictions using system identification. Journal of Aircraft, 2001, 38(1): 81-87  
    蒋跃文. 基于广义网格的CFD方法及其应用. [博士论文]. 西安:西北工业大学, 2013 (Jiang Yuewen. Numerical solution of Navier-Stokers equations on generalized mesh and its applications. [PhD Thesis]. Xi'an: Northwestern Polytechnical University, 2013 (in Chinese))
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出版历程
  • 收稿日期:  2014-10-10
  • 修回日期:  2015-06-06
  • 刊出日期:  2015-09-18

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