Hydraulic Characterization of Variable-Speed Pump Turbine under Typical Pumping Modes
Abstract
:1. Introduction
2. Geometric Model and Numerical Schemes
2.1. Variable-Speed Pump Turbine Model and Parameters
2.2. Calculated Operating Conditions
2.3. Grid Generation
2.4. Numerical Setup and Boundary Conditions
2.5. Monitoring Points
3. Results and Discussion
3.1. Hydraulic Performance
3.2. Pressure Pulsation Characteristics under Two Typical Pumping Modes
3.3. The Axial Hydraulic Thrust and Radial Force of the Unit in the Two Typical Pumping Modes
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Parameter Name | Symbols | Values |
---|---|---|
Runner exit | D2 (mm) | 2162.6 |
Runner entrance | D1 (mm) | 408.4 |
Runner blades | nIM (−) | 9 |
Stay/guide vanes | nSV/nGV (−) | 22/22 |
Spiral casing exit | DOUT (mm) | 2350 |
Draft tube entrance | DIN (mm) | 4600 |
Rated head | HR (m) | 430 |
Working Conditions | Guide Vane Opening α (◦) | Speed (rpm) |
---|---|---|
Case1 (HMax,QMin) | 8.4 | 421.09 |
Case2 (HMin,QMax) | 27 | 447.49 |
Component | Element Type | Element Number |
---|---|---|
Spiral case | Tetrahedral | 493,696 |
Stay vanes | Hexahedral | 579,660 |
Guide vanes | Hexahedral | 383,780 |
Runner | Hexahedral | 2,008,124 |
Gap | Hexahedral | 598,200 |
Pressure balance pipe | Hybrid | 72,236 |
Draft tube | Hexahedral | 372,265 |
Total | - | 4,389,241 |
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Shang, L.; Cao, J.; Wang, Z.; Liu, X. Hydraulic Characterization of Variable-Speed Pump Turbine under Typical Pumping Modes. Processes 2023, 11, 2903. https://doi.org/10.3390/pr11102903
Shang L, Cao J, Wang Z, Liu X. Hydraulic Characterization of Variable-Speed Pump Turbine under Typical Pumping Modes. Processes. 2023; 11(10):2903. https://doi.org/10.3390/pr11102903
Chicago/Turabian StyleShang, Linmin, Jingwei Cao, Zhengwei Wang, and Xiaobing Liu. 2023. "Hydraulic Characterization of Variable-Speed Pump Turbine under Typical Pumping Modes" Processes 11, no. 10: 2903. https://doi.org/10.3390/pr11102903
APA StyleShang, L., Cao, J., Wang, Z., & Liu, X. (2023). Hydraulic Characterization of Variable-Speed Pump Turbine under Typical Pumping Modes. Processes, 11(10), 2903. https://doi.org/10.3390/pr11102903