对二维水翼结构进行流固耦合运动分析,利用大涡模拟方法计算高雷诺数下水翼绕流场,流场力作用于二自由度刚体上导致周期性的垂荡和转动,龙格库塔法求解刚体水翼的运动方程,位移参数作为下一时间步流场计算的边界条件,具体通过编译自定义函数控制刚体运动和流场网格变化。探讨了初始攻角、刚心位置以及来流速度对水翼振动的影响,发现在来流速度增大至某一数值时水翼发生了颤振现象,并在时域与频域上对颤振的发生机理进行深入探讨。
The objective of this research is to investigate the fluid-structure interaction motion of a two-dimensional hydrofoil in viscous flow. Large-eddy simulation method is used to calculate the flow field around hydrofoil,and RungeKutta method is applied to solve equations of rigid body motion. Flow results and motion results exchange data at the hydrofoil wall surface,by compiling a user-defined functions to control rigid body motion and flow field grid update. The influence of the hydrofoil parameters,i.e. attack angle,elastic axis position and flow velocity,on vibration are discussed. Once the velocity increase to a certain value,hydrofoil flutter phenomenon occurred. Also,discussion on time and frequency domain is held to investigate the flutter phenomenon.
2016,38(6): 7-13 收稿日期：2015-12-09
DOI：10.3404/j.issn.1672-7619.2016.06.002
分类号：U661.1
基金项目：国家自然科学基金资助项目(11272213,51479116)
作者简介：刘胡涛(1991-),男,硕士研究生,研究方向为船舶水动力学。
参考文献：
[1] THEODORSEN T,MUTCHLER W H. General theory of aerodynamic instability and the mechanism of flutter[R]. NACA Report No.496,NACA, 1935.
[2] HUANG R F,LIN C L. Vortex shedding and shear-layer instability of wing at low-Reynolds numbers[J]. AIAA Journal,1995,33(8):1398-1403.
[3] JUNG Y W,PARK S O. Vortex-shedding characteristics in the wake of an oscillating airfoil at low Reynolds number[J]. Journal of Fluids and Structures,2005,20(3):451-464.
[4] 王囡囡. 二元机翼颤振及其主动控制的研究[D]. 徐州:中国矿业大学, 2013. WANG Nan-nan. Research on flutter and active control for two-dimensional airfoil[D]. Xuzhou:China University of Mining and Technology,2013.
[5] HENRY C J. Hydrofoil flutter phenomenon and airfoil flutter theory[M]. New Jersey:Davidson Laboratory,1961.
[6] 余志兴. 粘性流场中的水弹性计算[D]. 上海:上海交通大学,1999. YU Zhi-xing. Hydroelastic dynamics in viscous flow[D]. Shanghai:Shanghai Jiao Tong University,1999.
[7] 余志兴,刘应中,缪国平. 二维机翼弹簧系统的涡激振动[J]. 船舶力学,2002,6(5):25-32. YU Zhi-xing,LIU Ying-zhong,MIAO Guo-ping. Vortex-induced vibration of two-dimensional wing-spring coupled system[J]. Journal of Ship Mechanics,2002,6(5):25-32.
[8] 刘晓宙,缪国平,余志新,等. 流体通过涡激振动机翼的声辐射研究[J]. 声学学报,2005,30(1):55-62. LIU Xiao-zhou,MIAO Guo-ping,YU Zhi-xin,et al. Research on the sound generation by flow around vortex-induced vibrated aerofoil[J]. Acta Acustica,2005,30(1):55-62.
[9] CHAE E J,AKCABAY D T,YOUNG Y L. Dynamic response and stability of a flapping foil in a dense and viscous fluid[J]. Physics of Fluids,2013,25(10):104106.
[10] CHAE E J. Dynamic response and stability of flexible hydrofoils in incompressible and viscous flow[D]. Michigan:University of Michigan,2015.
[11] 程贯一, 王宝寿, 张效慈. 水弹性力学——基本原理与工程应用[M] 上海:上海交通大学出版社,2013. CHENG Guan-yi,WANG Bao-shou,ZHANG Xiao-ci. Hydroelasticity——the basics with applications[M]. Shanghai:Shanghai Jiao Tong University,2013.
