以水平轴潮流能水轮机作为研究对象,采用试验与仿真相结合的方法,研究叶尖优化处理对于水轮机水动力性能、尾流恢复及叶尖涡控制的影响。结果表明：叶尖优化模型能有效减弱叶尖处从压力面向吸力面的回流,大幅减轻叶尖涡整体的强度,对加速水轮机尾流的恢复、提高水轮机的水动力学性能具有积极作用。研究显示与基础叶片水轮机模型相比,叶尖优化水轮机模型的获能系数整体增加1.92%。
Abstract
In this paper, the effects of tip optimization treatment on hydrodynamic performance, wake recovery and tip vortex control of horizontal axis current turbine are studied by means of experiment and simulation.The results show that the blade tip optimization model can effectively reduce the return flow from the pressure to the suction surface at the tip of the blade.It can greatly reduce the overall strength of the blade tip vortex, which has a positive effect on accelerating the recovery of the turbine's wake and improving the hydrodynamic performance of the turbine.Compared with the basic blade turbine model, the power coefficient of the blade tip optimized turbine model is increased by 1.92%.
关键词
叶尖涡 /
潮流能 /
水槽试验 /
叶片优化
Key words
tip vortex /
tidal current energy /
flume experiment /
blade optimization
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基金
国家重点研发计划（2018YFB1501903）; 山东省自然科学基金（ZR2021ME095）; 山东省重点研发计划（2019GGX103012）
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