文档介绍：2004 ANSYS 中国用户论文集
基于 ANSYS 分析的水轮机过流部件流固耦合振动研究*
邬海军郭鹏程廖伟丽罗兴锜
西安理工大学水利水电学院,陕西 710048

[ 摘要] 本文通过对弹性体振动的有限元方程和不可压缩粘性流体的有限元方程的分析,得到了弹性体
与粘性流体流固耦合的有限元方程。以水轮机导叶为例,运用 ANSYS 有限元软件计算了其在空
气中的振动特性以及流固耦合振动的频率和振型,并对二者进行比较,分析了影响振动的因素,
为水轮机部件的设计与预防裂纹的产生起到了一定的作用。
[ 关键词] ANSYS;流固耦合;振动;有限元

Study on Fluid-Solid Coupling Dynamic for ponent
of Hydraulic Turbines Based on ANSYS
Wu Haijun Guo Pengcheng Liao Weili Luo Xingqi
Institute of Water Resources and Hydroelectric Engineering
Xi’an University of Technology, Xi’an 710048
[Abstract] FEM equation of fluid-solid coupled vibration was constituted by analyzing FEM equation of
pressible viscosity fluid and elastomer. Based on the equation, taking example of vane,
its dynamic characteristics in the air and frequency and swing of fluid-solid coupling vibration
are calculated by using ANSYS. Finally calculation of fluid-solid coupling vibration of blade
was forecasted on the step paring the two vibration characteristics, at one time, the
main factor that affect the vibration was analyzed. So these result have a definite meaning for
design and preventing crack in ponent of hydraulic turbines.
[Keywords] ANSYS;Fluid-solid coupling;Vibration ;FEM

1 引言
近年来,水轮发电机组的容量、尺寸及比转速不断提高,但水轮机的重要部件如转轮叶
片,固定导叶等在机组的复杂运行环境中,受到各种水力不平衡力和其他各种激励源的作用
而产生的振动问题日益突出。各种振源都各自具有固定的物理特征和振动规律,机组产生振
动振源并非是唯一的,这就给寻找振源工作增