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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국마린엔지니어링학회 Journal of Advanced Marine Engineering and Technology (JAMET) 한국마린엔지니어링학회지 제42권 제10호
- 발행연도
- 2018.12
- 수록면
- 812 - 817 (6page)
- DOI
- 10.5916/jkosme.2018.42.10.812
이용수
이 논문의 연구 히스토리 (2)
2018
Study on swirl flow in a draft tube of a bulb hydro turbine model
Viet Luyen Vu
,
Zhenmu Chen
,
Young-Do Choi
Journal of Advanced Marine Engineering and Technology (JAMET)
2018.12
학술저널
J-Groove shape optimization to suppress swirl flow in the draft tube of a bulb hydro turbine model
Viet Luyen Vu
,
Young-Do Choi
한국유체기계학회 학술대회 논문집
2018.11
학술대회자료
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초록· 키워드
오류제보하기
The present study focuses on the effect of swirl flow in a draft tube on the performance of a bulb hydro turbine model at various turbine operating conditions by CFD analysis. First, the performance characteristics of the bulb turbine model were investigated. Subsequently, four operating conditions were chosen for loss analysis in the downstream region of the turbine model. Next, the swirl number was calculated along the downstream region at different turbine operating conditions. Moreover, the internal flow was examined to understand the turbine performance characteristics. From this study, it was observed that the swirl number was proportional to the loss in the downstream region of the turbine model. For the high swirl number, i.e., PL1 and PL2 conditions, the internal flow investigation indicated a relatively large recirculation region in the downstream region. For the low swirl number, i.e., BEP condition, a smooth streamline was found. Thus, the high efficiency of the turbine model is illustrated in this condition.
목차
Abstract
1. Introduction
2. Turbine model and numerical method
3. Results and discussion
4. Conclusions
References
참고문헌 (19)
참고문헌 신청
[단행본] - P. Dörfler / 2012 / Flow-Induced Pulsation and Vibration in Hydroeletric Machinery Zurich / Springer Verlag London
[학술지(정기간행물)] - S. W. Armfield / 1986 / Numerical simulation of swirling flow in diffusers / International Journal For Numerical Methods in Fluid 6 (8) : 541 ~ 556
[학술지(정기간행물)] - Y. Senoo / 1978 / Swirl flow in conical diffusers / Bulletin of the JSME 21 (151) : 112 ~ 119
[학술지(정기간행물)] - R. P. Lohmann / 1979 / Swirling flow through annular diffusers with conical walls / Journal of Fluids Engineering 101 (2) : 224 ~ 229
[학술지(정기간행물)] - Michihiro Nishi / 2013 / An Outlook on the Draft-Tube-Surge Study / International Journal of Fluid Machinery and Systems 6 (1) : 33 ~ 48
[학술지(정기간행물)] - S. W. Armfield / 1986 / Numerical simulation of swirling flow in diffusers / International Journal For Numerical Methods in Fluid 6 (8) : 541 ~ 556
[학술지(정기간행물)] - Y. Senoo / 1978 / Swirl flow in conical diffusers / Bulletin of the JSME 21 (151) : 112 ~ 119
[학술지(정기간행물)] - R. P. Lohmann / 1979 / Swirling flow through annular diffusers with conical walls / Journal of Fluids Engineering 101 (2) : 224 ~ 229
[학술지(정기간행물)] - Michihiro Nishi / 2013 / An Outlook on the Draft-Tube-Surge Study / International Journal of Fluid Machinery and Systems 6 (1) : 33 ~ 48
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