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When evaluating variations in operational parameters of hydro-turbine units, traditional simulation methods require remeshing and reconfiguration of boundary conditions, significantly increasing computational costs. This paper takes a pump-turbine of a pumped storage power station as an example and proposes a full three-dimensional reduced-order model(ROM) for the entire flow passage of the pump-turbine based on the proper orthogonal decomposition(POD) method and tailored for digital twin applications. The model enables rapid numerical calculations and visualization of flow field contour distributions for the pump-turbine. Compared with CFD simulations, under the same computational resources, the simulation time is reduced from 5 hours to 0.5 seconds, demonstrating a significant advantage in computational efficiency. Model validation through error analysis between the CFD model and the reduced-order model under turbine operating conditions shows that the error between the two is less than 8%, confirming the high accuracy of the proposed reduced-order model. In conclusion, the developed reduced-order model meets the requirements for digital twin applications.
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Basic Information:
DOI:10.20040/j.cnki.1000-7709.2026.20251547
China Classification Code:TV734.1
Citation Information:
[1]JI Lian-tao,TAN Zhi-feng,WAN Ke-yang ,et al.Research on Reduced-Order Model of Pump Turbine Flow Field for Digital Twin[J].Water Resources and Power,2026,44(03):178-183.DOI:10.20040/j.cnki.1000-7709.2026.20251547.
Fund Information:
国家电网公司科技项目(4000-202355082A-1-1-ZN)
2025-09-04
2025
2025-11-10
2025
1
2026-01-29
2026-01-29
2026-01-29