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Yaping Zhao, Yanrong Li, Jianjun Feng, Mengfan Dang, Yajing Ren and Xingqi Luo
Tubular turbines are widely used in low water head and tidal power development due to their straight flow path, simple structure, and wide efficient area. However, the severe vibration during actual operation greatly affects the safe operation of the tub...
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Shufang Bai, Yun Zeng, Fang Dao, Boyi Xiao, Xiang Li and Jing Qian
Studies show that sediment erosion is one of the main factors attributing to hydraulic turbine failure. The present paper represents an investigation into acoustic vibration signals generated by the water flow impacting the hydraulic turbine runner under...
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Yalei Bai and Donglei Wu
In daily operation, the flow state in the runner chamber of an axial flow pump is extremely complex, and the pressure pulsation caused by the vibration of the unit and the hydraulic excitation is also extremely complex. The pressure pulsation will also g...
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Wei Wang, Xi Wang, Zhengwei Wang, Mabing Ni and Chunan Yang
The instability of the no-load working condition of the pump turbine directly affects the grid connection of the unit, and will cause vibration and damage to the components of the unit in severe cases. In this paper, a three-dimensional full flow numeric...
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Xuan-Ha Nguyen, Tien-Hiep Mau, Ingo Meyer, Bao-Lam Dang and Hong-Phuc Pham
Modeling and waveform optimization are important research topics for piezo-actuated stick?slip micro-drives. In this paper, the dynamics of piezo-actuated stick?slip micro-drives (PASSMDs) are theoretically investigated. We introduce an extended model ta...
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Carme Valero, Mònica Egusquiza, Eduard Egusquiza, Alexandre Presas, David Valentin and Matias Bossio
Due to the increasing share of new renewable energies like wind and solar in the generation of electricity the need for power regulation and energy storage is becoming of paramount importance. One of the systems to store huge amounts of energy is pumped ...
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