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- W2357693405 abstract "The Francis turbine is widely applied. It is of value to study dynamic characteristic of the Francis turbine revolver's blade, which is subjected to a variety of vibration excitations. The influence of the water environment on natural frequencies of a Francis turbine runner's blade is analyzed. The finite element method (FEM) model includes the complete blade structure and the fluid region. The results of numerical analysis are compared with experimentally obtained data. The eigenfrequencies and mode shapes of the blade vibrating in operating flow path are compared with those in the air. The results show that the frequency in the water is smaller than the one with same order in the air, with different reduction to different order. The average reduction amounts to 40%. They also show the mesh density greatly affects the precision of computation and the element with mid node is much more accurate than the one without mid node." @default.
- W2357693405 created "2016-06-24" @default.
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- W2357693405 date "2004-01-01" @default.
- W2357693405 modified "2023-09-25" @default.
- W2357693405 title "DYNAMIC CHARACTERISTIC ANALYSIS FOR THE BLADES OF FRANCIS TURBINE" @default.
- W2357693405 hasPublicationYear "2004" @default.
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