【摘要】 为了提高管道式水轮机的输出功率，基于凸轮结构，设计一种叶片可偏转垂直轴水轮机，并提出两种可偏转方案。首先建立水轮机仿真模型，并通过数值模拟计算分析方法，研究不同偏转方案对水轮机水力性能的影响。在相同的入口流速与转速条件下，对比两种偏转方案与不偏转叶片方案的流场特性，并对表现更优的方案进行水力性能分析。结果显示，管道式叶片可偏转垂直轴水轮机在减小负力矩方面，回程叶片全部闭合的变桨方式更优，其在低叶尖速比工况下表现出良好的适应性，最佳性能出现在叶尖速比0.6。研究结果对管道水轮机的设计优化有一定的参考意义。更多还原

【Abstract】 In order to improve the output power of pipe turbine, a vane deflection vertical shaft turbine based on CAM structure is designed, and two deflection schemes are proposed. Firstly, the simulation model of the turbine is established, and the influence of different deflection schemes on the hydraulic performance of the turbine is studied by numerical simulation. Under the same inlet velocity and speed, the flow field characteristics of two deflection schemes and non-deflection schemes are compared, and the performance of the better scheme is analyzed. The results show that in terms of reducing the negative torque of the tube-vane deflecting vertical axis turbine, the variable blade mode with all the return blades closed is better, and it shows good adaptability under the condition of low tip speed ratio, and the best performance appears at tip speed ratio 0.6. The research results have a certain reference significance for the design and optimization of pipe turbine.更多还原