Fengxia Shi1,2, Guangbiao Zhao1,*, Yucai Tang1, Haonan Zhan1, Pengcheng Wang1
Sound & Vibration, Vol.58, pp. 101-117, 2024, DOI:10.32604/sv.2024.047082
Abstract In order to study the effect of splitter blades on the internal and external sound field of the hydraulic turbine, the paper chose a centrifugal pump with a specific speed ns = 33 reversed as a hydraulic turbine as the research object, and added the short blades on the original impeller to form a new splitter impeller. Based on the Re-Normalization Group (RNG) k-ε turbulence model to conduct numerical simulation for the hydraulic turbine, this thesis calculated the internal and external acoustic field by means of the acoustic boundary element (BEM) and finite element (FEM) and analyzed the noise radiation… More >
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