摘要
以流滩坝灯泡贯流转桨机组转轮桨叶为例，从推导的转轮叶片液固耦合运动方程出发，计算了轴流机组桨叶在空气中振动和在工作流道中液固耦合振动的主频和主振型，并对流滩坝电站桨叶在稳定运行中产生共振的可能性进行了分析。转轮叶片在工作流道中的主频、主振型和共振特性分析是机组安全运行不可缺少的研究内容，该文在理论计算方法上有别于原有的方法。给出的计算方法适用于其它类型叶片的液固耦合振动特性分析。
aking the Liutangba bulb Kaplan blade as an example, the paper calculated the eigenfrequencies and mode shapes of the blade both vibrating in air and in operating flow path (the runner blade fluidstructure interaction equations are deduced by the authors). The blade resonance probability in stable operation condition is also analyzed. It is essential to do resarch on the eigenfequencies, mode shapes and resonance analysis of runner blade in operating flow path. The method used in the paper has distinct features from others. The fluidstructure interaction vibrating analysis method is also effective in other types of hydraulic runner blades.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1998年第1期15-18,共4页
Journal of Tsinghua University(Science and Technology)
关键词
桨叶
液固耦合
振动
轴流式水轮机
仿真
blade
fluidstructure interaction
eigen frequencies
mode shapes
resonance
