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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。
Taking Tanabe bulb interchange rotor blade as an example, from the derivation of the fluid-structure interaction equations of runner blade, the vibration of airfoil blades in the air and the liquid-solid coupling vibration in the working channel are calculated Frequency and the main vibration mode, and also analyzes the possibility of the resonance of the blade of the Yuandanba Hydropower Station in stable operation. The analysis of the main frequency, the main vibration modes and the resonance characteristics of runner vanes in the working channel is an indispensable part of the safe operation of the unit. This paper is different from the original method in the theoretical calculation method. The calculation method given is suitable for the analysis of liquid-solid coupling vibration characteristics of other types of blades.