水利水电技术（中英文）2026，Vol.57Issue(7)：241-254,14.DOI:10.13928/j.cnki.wrahe.2026.07.018
基于转轮叶片修型的大型混流式水轮机水力噪声特性分析
Analysis of hydraulic noise characteristics of large mixed-flow turbines based on runner blade modification
摘要
Abstract
[Objective]The aim is to investigate the hydraulic noise characteristics and control strategies of large mixed-flow turbines,specifically targeting the hydraulic whistling noise generated during the operation of a specific large mixed-flow turbine.[Methods]The Reynolds-averaged Navier-Stokes(RANS)method was used to perform numerical simulations of the large mixed-flow turbine under hydraulic whistling conditions,both before and after modifying trailing edges of the runner blades.Pressure pulsations were monitored at internal measurement points of key flow-passing components.Using fluid-acoustic coupling,the distribution of external sound pressure levels and internal sound power levels in flow-passing components such as the runner and draft tube were analyzed.The flow field distribution patterns and mechanisms of hydraulic noise reduction before and after the modification of the runner blade trailing edges were analyzed.[Results]The result showed that abnormal pressure pulsation frequencies in the range of 300 to 400 Hz were detected in flow-passing components including the volute,runner,and draft tube.Areas with high sound power levels were mainly located near the trailing edges of the runner blades.[Conclusion]The findings indicate that complex vortex structure is one of the causes of hydraulic noise in turbines.Modifying the trailing edges of the runner blades can achieve hydraulic noise reduction in turbines.关键词
水轮机/数值模拟/叶片修型/压力脉动/水力噪声/雷诺时均方法/流声耦合/运行稳定性Key words
hydraulic turbine/numerical simulation/blade modification/pressure pulsation/hydraulic noise/Reynolas-Averaged-Navier-Stokes(RANS)method/fluid-structure-acoustic coupling/operational stability分类
能源科技引用本文复制引用
周玉国,乔鹏,刘海洋,朱文兵,刘昆庭,阚阚..基于转轮叶片修型的大型混流式水轮机水力噪声特性分析[J].水利水电技术（中英文）,2026,57(7):241-254,14.基金项目
三峡金沙江云川水电开发有限公司宁南白鹤滩电厂科研项目资助(Z532302052) （Z532302052）
国家自然科学基金项目(52271275,52379086) （52271275,52379086）
