Browse > Article
http://dx.doi.org/10.5762/KAIS.2017.18.10.675

CFD Analysis on the Hydro Turbine by the Existence of Blade Holes  

Park, Yoo-Sin (Institute of Technology, CENITS Corporation Inc.)
Kim, Ki-Jung (Institute of Technology, CENITS Corporation Inc.)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.18, no.10, 2017 , pp. 675-680 More about this Journal
Abstract
Considering that most sewage treatment facilities have a water head of less than 2.0 m and a constant flow rate, the development of a small hydro power generation device capable of maintaining stable power generation and efficiency is urgently needed. In this study, a numerical analysis using the CFD code was carried out to develop a drag force type vertical axis hydro turbine for the improvement of the production efficiency of small-scale hydro energy underlow flow velocity conditions. The blade pressure changes and internal flows were analyzed in the presence or absence of hydro turbine blade holes at a flow velocity of less than 2.0 m/s. The pressure distribution of the hydro turbine blades with holes was found to be about 5.1 % lower than that of the hydro turbine blades without holes. The analysis of the internal flow around the water tank and hydro turbine blade revealed that the flow velocity varied with the vector distribution and that the flow velocity of the hydro turbine blades with holes was 5.6 % less than that of the hydro turbine blades without holes. It is believed that forming a hole in the blade may be helpful for its structural safety.
Keywords
Blade hole; CFD; Hydro turbine; Small hydro power; Variable flow velocity;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 W. S. Park, Small Hydropower Development Practices, of Existing Structures Using, Korean Solar Energy Society, vol. 3, no. 4, 2004.
2 K. H. Kim, Framework of Feasibility Study for Small Hydropower Development, Inha University, Master's Thesis, 2008.
3 D. H. Na, Feasibility Study on the Construction of Small Hydro-Power Plants at the Discharge Point of Gumi Sewage Treatment plant, Kumoh National Institute of Technology, doctorate thesis, 2010.
4 J. Y. Kum, Structure Design and Experimental Appraisal of the Drag Force Type Vertical Axis Wind Turbine, Busan National University, M. S. Thesis, 2005.
5 J. H. Park, Y. T. Kim, Y. Cho, B. K. Kim and Y. H. Lee, Performance Analysis of 10kW Class Propeller Hydro Turbine by the Change of Flow Rates and the Number of Runner Vane Using CFD, The KSFM Journal of Fluid Machinery: vol. 17, no. 2, pp.05-11, 2014. DOI: https://doi.org/10.5293/kfma.2014.17.2.005   DOI
6 H. K. Kim, T. S. Kim, J. H. Lee, B. Y. Moon and K. W. Kang, Full Scale Structural Testing of Small Wind Turbine Composite Blade, Trans. Korean Soc. Mech. Eng. A, vol. 35, no. 11, pp. 1407-1413, 2011. DOI: https://doi.org/10.3795/KSME-A.2011.35.11.1407   DOI
7 D. S. Kim, W. Y. Jung and J. Jung, Stress Analysis of the Blade Joint for a Small Wind Turbine, Trans. Korean Soc. Mech. Eng. A, vol. 36, no. 1, pp. 117-124. 2012. DOI: https://doi.org/10.3795/KSME-A.2012.36.1.117   DOI
8 S. Y. Jeong and K. B. Lee, Flow characteristics analysis and test in the Pelton turbine for pico hydro power using surplus water, Journal of the Korea Academia-Industrial cooperation Society, vol. 17, no. 4, pp. 325-331, 2016. DOI: http://dx.doi.org/10.5762/KAIS.2016.17.4.325   DOI
9 J. H. Park, Y. T. Kim, B. G. Kim and Y. H. Lee, CFD Analysis of a Micro Propeller-Type Hydro Turbine by Varying the Number of Runner and Guide Vanes, AFORE 2012, JEJU.(HPFRCC5), pp. 3-12, 2007.