Improving the Efficiency of a Hydro-Turbine System by Vortex Generators

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Abstract:

This paper studies the effect of vortex generators on hydro-turbine working performances. The study was carried out on a hydro-turbine system provided by Waterpumps Oy, Finland. First, the performance of the hydro-turbine system was analyzed with a CFD solver under different working conditions. Then, the hydro-turbine performance was examined with several vortex generators installed uniformly on the inside wall of the draft tube near its inlet. The turbine system’s efficiencies were compared for cases with and without vortex generators. Results show that turbine performs better when there are vortex generators installed in the draft tube of which the pressure recovery factor is much higher.

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Periodical:

Advanced Materials Research (Volumes 354-355)

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636-641

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Online since:

October 2011

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] Ciocan Gabriel Dan, Iliescu Monica Sanda, Vu Thi Cong: Journal of Fluids Engineering, Transactions of the ASME. Vol. 129(2007), pp.146-158

Google Scholar

[2] B. D. Marjavaara, T. S. Lundström: Automatic shape optimisation of a hydropower draft tube. Proceedings of the ASME/JSME Joint Fluids Engineering Conference. 1819-1824(2003)

Google Scholar

[3] Nishi Michihiro, Matsunaga Shigenori, Okamoto Minoru, Eguchi Kazukuni, Kubota Takashi, Senoo Yasutoshi: Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Vol. 52(1986), pp.3237-3243

DOI: 10.1299/kikaib.52.3237

Google Scholar

[4] Z. D. Qian, B. Zheng, J. D. Yang, Y. L. Wu: Shuili Fadian Xuebao/Journal of Hydroelectric Engineering. Vol. 27(2008), pp.126-129, 134

Google Scholar

[5] Kawamoto Kazutoshi, Satoh Joushirou: Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B. Vol. 59(1993), pp.487-491

Google Scholar

[6] Y. H. Xie, T. Fan, D. Zhang: Visualization of vortex generator jets for conical diffuser separation control using PIV. International conference on experimental mechanics 2008.

DOI: 10.1117/12.839082

Google Scholar

[7] Taylor: Summary report on vortex generators. United Aircraft Research Development(1950).

Google Scholar

[8] H. C. Pan, Y. Chen, X. Nie, J. Mao, W. Fan: New type of draft tube and the production methods(2007). (In Chinese)

Google Scholar