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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.6
- 수록면
- 35 - 43 (9page)
이용수
이 논문의 연구 히스토리 (8)
2024
Loss Analysis by Impeller Blade Angle in the S-Curve Region of Low Specific Speed Pump Turbine
Ujjwal Sh
,
estha
,
Young-Do Choi
신·재생에너지
2024.06
학술저널
Effect of Pump Turbine Impeller Blade Angle in the S-Curve Region While Operating in Turbine Mode
Ujjwal Sh
,
estha
,
Young-Do Choi
한국유체기계학회 논문집
2024.06
학술저널
Influence of Impeller Blade Angle on the Pump Turbine Performance at the Off-Design Conditions at Turbine Mode
Ujjwal Sh
,
estha
,
Young-Do Choi
한국신·재생에너지학회 학술대회 초록집
2024.05
학술대회자료
Hydraulic Performance and Internal Flow Behavior Comparison in S-Curve Region by Specific Speed of Pump Turbine
Ujjwal Sh
,
estha
,
Young-Do Choi
한국신·재생에너지학회 학술대회 초록집
2024.05
학술대회자료
Comparison on the Pump Turbine Hydraulic Performance and Internal flow in S-Curve Region by Specific Speed
Ujjwal Sh
,
estha
,
Young-Do Choi
한국유체기계학회 논문집
2024.04
학술저널
2023
Effect of Blade Angle Distribution in the Performance of PUMP Turbine at S-Curve Region
Ujjwal Sh
,
estha
,
Young-Do Choi
AFORE
2023.11
학술대회자료
Flexible Operation Performance Improvement of Pump-Turbine at off Design Points by J-Groove Installation
Ujjwal Sh
,
estha
,
Donghyeon Ko
외 4명
한국신·재생에너지학회 학술대회 초록집
2023.06
학술대회자료
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초록· 키워드
오류제보하기
A pump turbine is a technically matured option for energy production and storage systems. At the off-design operating range, the pump turbine succumbed to flow instabilities, which correlated with the pump turbine geometry. A low specific speed pump turbine was designed and modified according to the impeller blade angle. Reynolds-Average Navier-Stokes is carried out with a shear stress transport turbulence model to evaluate the detailed flow characteristics in the pump turbine. The impeller blade inlet angle (β₁) and outlet angle (β₂) are used to evaluate hydraulic loss in the pump turbine. When β1 changed from low to high value, the maximum efficiency is increased by 4.75% in turbine mode. The S-Curve inclination is reduced by 8% and 42% for changes in β₁ and β₂ from low to high values, respectively. At α = 21°, the shock loss coefficient (ζ<SUB>s</SUB>) is reduced by 16% and 19% with increases of β₁ and β₂ from low to high values, respectively. When β₁ and β₂ values increased from low to high, the impeller friction coefficient (ζ<SUB>f</SUB>) increased and decreased by 20% and 8%, respectively. Hence, the high β₂ effectively reduced the loss coefficient and S-Curve inclination.
목차
ABSTRACT
1. Introduction
2. Design and Methodology
3. Results and Discussion
4. Conclusion
References
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