자유수면에서 마이크로 중력식 와류 수차 성능에 블레이드의 상대위치 변화가 미치는 영향 분석
Effect Analysis of Relative Position of Blade on Performance of Micro Gravitational Vortex Turbine in Free Water Surface
0
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
본 논문은 자유수면에서 마이크로 중력식 와류 수차의 성능에 블레이드 상대위치 변화의 영향을 이해하는 것이다. 일정한와류 유동에서 자유수면 아래 상대 와류 수심비(y/hv)의 범위 0 ~ 0.778 지점에 설치된 블레이드의 위치 변화에 따른마이크로 와류 수차의 회전수, 전압 및 전류를 측정하였다. 유량은 0.0063 ~ 0.00662 m3/s 범위이다. 실험 결과는 유입되는 유속과 난류강도의 분포가 변하기 때문에 블레이드의 상대위치가 마이크로 와류 수차의 성능에 영향을 미치는 것으로나타났다. 와류 수차에서 발생하는 에너지의 최대량은 상대 와류 수심비 0.111 ~ 0.222 지점에서 발생했다. 상대 와류수심비 0.111 지점의 출력은 자유수면 아래 상대 와류 수심비 0.588 지점보다 약 2.4배 더 크게 나타난다.
Abstract
This paper contributed to the understanding of the effect of the blade relative position on performance of micro gravitational vortex turbine in free water surface. In a constant vortex flow, the rotation, voltage and current of micro vortex water turbine were measured according to the position change of the blade installed at the relative vortex height (y/hv) ranging from 0 to 0.778 below the free water surface. The flow rate ranged from 0.0063 to 0.00662 m3/s. The results of the experiments showed that relative positions of the blade affected the performance of vortex water turbine because the distributions of incoming flow velocity and turbulence intensity were changed. The highest amount of the energy generated by the vortex water turbine occurred in the relative vortex height ranging from 0.111 to 0.222. The output power at the relative vortex height of 0.111 was about 2.4 times larger than the relative vortex height of 0.588 below the free water surface.
참고문헌 (17)
- Chattha, JA, "Numerical investigation of basin geometries for vortex generation in a gravitational water vortex power plant", The 8th International Renewable Energy Congress (IREC 2017) (2017)
- In-Ho Choi, "저낙차에서 와류발생부를 구비한 마이크로 소수력에 관한 실험 연구", 한국습지학회지, 22(2), pp.121~129 (2020), 한국습지학회[DOI]
- In-Ho Choi, "자유수면 와류에서 마이크로 소수력의 성능에 풀리가 미치는 영향 분석", 한국습지학회지, 23(3), pp.234~241 (2021), 한국습지학회[DOI]
- Drioli, C, "Su un particolare tipo di imbocco per pozzi di scarico(scaricatore idraulico a vortice)", L'Energia Elettrica, 24(10), pp.447~452 (1947)
- Jong-Bae Lee, "A Study on Structural Analysis of C-Rotor of Small Gravitational Water Vortex Turbines", 공학기술논문지, 14(3), pp.153~159 (2021), 공학기술연구원[DOI]
- Mulligan, S, "The Hydraulic Design and Optimisation of a Free Water Vortex for the Purpose of Power Extraction", Final Year Civil Engineering Project, Institute of Technology Sligo, ~ (2010)
- Yasuyuki Nishi, "Performance and Flow Field of a Gravitation Vortex Type Water Turbine", International Journal of Rotating Machinery, 2017, pp.1~11 (2017), Hindawi Limited[DOI]
- A. Jacob Odgaard, "Free‐Surface Air Core Vortex", Journal of Hydraulic Engineering, 112(7), pp.610~620 (1986), American Society of Civil Engineers (ASCE)[DOI]
- Rankine, WJM, "Manual of Applied Mechanics" (1858), C. Griffen Co
- H. M. Shabara, "CFD Simulation of Water Gravitation Vortex Pool Flow for Mini Hydropower Plants", Jurnal Teknologi, 74(5) (2015), Penerbit UTM Press[DOI]
- P.R. Spalart, "On the sensitization of turbulence models to rotation and curvature", Aerospace Science and Technology, 1(5), pp.297~302 (1997), Elsevier BV[DOI]
- Frank Suerich-Gulick, "Characteristics of Free Surface Vortices at Low-Head Hydropower Intakes", Journal of Hydraulic Engineering, 140(3), pp.291~299 (2014), American Society of Civil Engineers (ASCE)[DOI]
- Rizwan Ullah, "Preliminary experimental study on multi-stage gravitational water vortex turbine in a conical basin", Renewable Energy, 145, pp.2516~2529 (2020), Elsevier BV[DOI]
- G. H. Vatistas, "Theoretical and experimental studies on vortex chamber flows", AIAA Journal, 24(4), pp.635~642 (1986), American Institute of Aeronautics and Astronautics (AIAA)[DOI]
- Ede Mehta Wardhana, "Analysis of Gottingen 428 Airfoil Turbine Propeller Design with Computational Fluid Dynamics Method on Gravitational Water Vortex Power Plant", International Journal of Marine Engineering Innovation and Research, 3(3) (2019), Lembaga Penelitian dan Pengabdian kepada Masyarakat ITS[DOI]
- Zotlöterer, F, "Hydroelectric power plant. Patent WO 2004", 061295A3,2004, 2004
- Zotlöterer, F, "Hydroelectric power station", Google Patents, ~ (2009)