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- W2477682037 abstract "The runner design uses the design principle of low specific speed Francis turbine’s blade, then hydraulic design, 3D modeling and ICEM meshing were carried on a pump-turbine with given parameters. Taking into account the factors of high strain rate and curvature over the stream surface, RNG k- model was used to solve N-S equations. The finite volume method was used to discrete and SIMPLEC algorithm was used to solve pressure - speed coupling equations. By simulating the model with the software of Fluent and correcting repeatedly, the efficiency of pump-turbine under design condition was predicted. Besides, the changes of the pressure field and velocity field in volute, runner and draft tube were analyzed during different operating conditions. This design method has provided a new reference for pump-turbine runner’s hydraulic design and made up for the lack of empirical data by using CFD technology to give a direct-viewing reflection of hydraulic performances simultaneously, Numerical experiment results show that the optimal efficiency of turbine’s operating condition can reach 91 % and the optimal efficiency of pump’s can reach 82 %.There will be a further improvement if modify the model repeatedly." @default.
- W2477682037 created "2016-08-23" @default.
- W2477682037 creator A5004001281 @default.
- W2477682037 date "2016-01-01" @default.
- W2477682037 modified "2023-09-27" @default.
- W2477682037 title "RNG k-ε Pump Turbine Working Condition of Numerical Simulation and Optimization of the Model" @default.
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- W2477682037 doi "https://doi.org/10.1007/978-3-319-42297-8_63" @default.
- W2477682037 hasPublicationYear "2016" @default.
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