Optimization design of a reversible pump–turbine runner with high efficiency and stability
Optimization design of a reversible pump–turbine runner with high efficiency and stability
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DOI：
10.1016/j.renene.2015.03.050
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发表时间：
2015-09
期刊：
影响因子：
8.7
通讯作者：
B. Zhu;Xuhe Wang;L. Tan;D. Zhou;Yue Zhao;S. Cao
中科院分区：
文献类型：
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作者：
B. Zhu;Xuhe Wang;L. Tan;D. Zhou;Yue Zhao;S. Cao
泵和涡轮机操作之间的频繁变化对具有高效率和稳定性的泵-涡轮机转轮的设计提出了重大挑战。本文介绍了一个包括三维反求设计、计算流体力学、试验设计、响应面法和多目标遗传算法的多目标优化设计系统，并将其应用于中高水头水泵水轮机转轮的设计。对设计中的关键参数，包括叶片载荷、转轮高压侧叶片倾斜度和三角形流道形状进行了优化。两个转轮，一个具有大的正叶片倾斜，另一个具有大的负叶片倾斜，被选择用于进一步的数值研究和测量。模型试验表明，两种转轮均具有良好的动力性能。叶片负倾斜的转轮比叶片正倾斜的转轮具有更好的稳定性。
Frequent changes between pump and turbine operations pose significant challenges in the design of pump–turbine runners with high efficiency and stability. In this study, a multiobjective optimization design system, including a 3D inverse design, computational fluid dynamics, design of experiment, response surface methodology, and multiobjective genetic algorithm, is introduced and applied to the design of a middle-high-head pump–turbine runner. The key parameters in the design, including the blade loading, the blade lean at the high-pressure side of the runner, and the meridional channel shape, were selected as the optimized parameters. Two runners, one with a large positive blade lean and another with a large negative blade lean, were selected for further numerical investigations and measurements. Model tests show that both runners have good power performances. The runner with a negative blade lean has better stability than the runner with a positive blade lean.