지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국마린엔지니어링학회 Journal of Advanced Marine Engineering and Technology (JAMET) 한국마린엔지니어링학회지 제43권 제8호
- 발행연도
- 2019.10
- 수록면
- 631 - 639 (9page)
- DOI
- 10.5916/jkosme.2019.43.8.631
이용수
이 논문의 연구 히스토리 (4)
2018
Investigating the effect of J-Groove on swirl intensity distribution at a draft tube of the pump turbine
Ujjwal Sh
,
estha
,
Pat
외 3명
한국유체기계학회 학술대회 논문집
2018.11
학술대회자료
Effect of J-Groove design parameter on suppression of swirl flow
Ujjwal Sh
,
estha
,
Zhenmu Chen
외 1명
한국유체기계학회 학술대회 논문집
2018.07
학술대회자료
- 이 논문의 후속연구가 궁금하신가요?
- 연관 학술논문 또는 학술발표를 통해 보다 발전된 연구결과를 확인하실 수 있습니다.
- 이 논문의 연구 히스토리 확인하기
초록· 키워드
오류제보하기
Hydropower is the most versatile source of electricity. Francis hydro turbine is a major turbine in contribution to the hydropower sector. Francis hydro turbine operates in a wide operating range from deep partial load to full load condition. While operating in partial load condition, Francis turbine suffers from the unwanted swirl flow. Swirl flow will distort the flow in the draft tube to cause unsteady pressure fluctuation and vortex rope. This pressure fluctuation and vortex rope are the main reason for the vortex-induced vibration in the draft tube. The vibration is an unwanted phenomenon in the hydro turbine and cause of structured failure. Due to this reason, many techniques have implemented in the draft tube for suppression of swirl flow and vortex-induce vibration. J-groove is one of the methods for the suppression of swirl flow in the draft tube of Francis hydro turbine. J-Groove is the simple groove that mounted on the draft tube wall. The major design criteria for J-Groove are the length, depth, and number. The numerical analysis was performed to determine the effect of the J-Groove in the suppression of swirl flow in the draft tube. The performance results from the experiment and CFD analysis have compared for validation of the numerical method. Furthermore, the influence of the design parameter of the J-Groove on the suppression of swirl flow and loss in the draft tube has been studied. Moreover, the proper design criteria for the J-Groove has been set for the suppression of swirl flow in the draft tube.
목차
Abstract
1. Introduction
2. Turbine Model and Numerical Method
3. Results and Discussion
4. Conclusion
References
참고문헌 (22)
참고문헌 신청
C. Trivedi / 2014 / Pressure measurements on a high-head Francis turbine during load acceptance and rejection / Journal of Hydraulic Research 57(2):283~297
A. Favrel / 2015 / Study of the vortex-induced pressure excitation source in a Francis turbine draft tube by particle image velocimetry / Experiment Fluids 56(12):215~230
R. Goyal / 2017 / Vortex rope formation in a high head model Francis turbine / Journal of Fluids Engineering 139(4):1~14
P. Dorfler / 2013 / Flow-Induced Pulsation and Vibration in HydroElectric Machinery / Springer
A. I. Bosioc / 2012 / Numerical analysis of a swirling flow generated at lower runner speeds / Conference on Modelling Fluid Flow (CMFF’12)
A. Favrel / 2015 / Study of the vortex-induced pressure excitation source in a Francis turbine draft tube by particle image velocimetry / Experiment Fluids 56(12):215~230
R. Goyal / 2017 / Vortex rope formation in a high head model Francis turbine / Journal of Fluids Engineering 139(4):1~14
P. Dorfler / 2013 / Flow-Induced Pulsation and Vibration in HydroElectric Machinery / Springer
A. I. Bosioc / 2012 / Numerical analysis of a swirling flow generated at lower runner speeds / Conference on Modelling Fluid Flow (CMFF’12)
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UCI(KEPA) : I410-ECN-0101-2019-559-001328320