Abstract
As a core component of a hydropower station, hydro turbines play a vital role in the integration of a power station. Research on the technology of hydro turbine is continuously increasing with the development of water electricity. It is effective and successful to design a Francis turbine runner blade with good performance by one-dimensional hydraulic design method. For the one-dimensional hydraulic design, the runner blade angle at leading and trailing edges can be defined by calculation of Euler’s head. Design of the runner blade profile at several cross sections is needed to design a runner shape. In this study, there are three different blade loadings conducted to compare the internal flow characteristics and performance. The result shows that the front loading achieves the best efficiency in comparison to other loadings, which is good at suppressing the loss at draft tube.
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References
J-S. Kang and S-S. Yang, Modeling and experimental evaluation of torque loss in turbine test rig for accurate turbine performance evaluation, Journal of Mechanical Science and Technology, 26 2 (2012) 473–479.
J. Liu, S. Liu, Y. Sun, L. Jiao, Y. Wu and L. Wang, Threedimensional flow simulation of transient power interruption process of a prototype pump-turbine at pump mode, Journal of Mechanical Science and Technology, 27 5 (2013) 1305–1312.
Y. Wu, J. Liu, Y. Sun, S. Liu and Z. Zuo, Numerical analysis of flow in a Francis turbine on an equal critical cavitation coefficient line, Journal of Mechanical Science and Technology, 27 6 (2013) 1635–1641.
S-Y. Cho, T-H. Cho and S-K. Choi, An experimental study of the performance characteristics with four different rotor blade shapes on a small mixed-type turbine, Journal of Mechanical Science and Technology, 19 7 (2005) 1478–1487.
M. Nishi and S. Liu, An outlook on the draft-tube-surge study, International Journal of Fluid Machinery and System, 6 1 (2013) 33–48.
A. Yu, X. Luo and B. Ji, Studies of the effect of vortexcontrol grooves on pressure oscillations in a francis turbine draft tube, Proceedings of ASME-JSME-KSME Joint Fluids Engineering Conference (2015).
S-R. Romeo, T. C. Vu, S. Muntean, G. D. Ciocan and B. Nennemann, Jet control of the draft tube vortex rope in francis turbines at partial discharge, Proceedings of the 23rd IAHR Symposium on Hydraulic Machinery and Systems (2006).
J-H. Jeon, S-S. Byeon and Y-J. Kim, Numerical study on the flow characteristics of the francis turbine with various blade profiles, ASME 2013 Fluids Engineering Division Summer Meeting, American Society of Mechanical Engineers (2013).
J. Wu, K. Shimmei, K. Tani, K. Niikura and J. Sato, CFDbased design optimization for hydro turbines, Journal of Fluids Engineering, 129 2 (2006) 159–168.
A. Alnaga and J-L. Kueny, Optimal design of hydraulic turbine distributor, WSEAS Transactions on Fluid Mechanics, 2 3 (2008) 175–185.
M. K. Shukla and R. Jain, CFD analysis of 3-D flow for francis turbine, International Journal of Mechanical Engineering, 1 2 (2011) 93–100.
R. R. Navthar, J. Tejas, D. Saurabh, D. Nitish and A. Anand, CFD analysis of francis turbine, International Journal of Engineering Science and Technology, 7 4 (2012) 3194–3199.
ANSYS Inc., ANSYS CFX Documentation Ver. 12, http://www.ansys.com (2012).
Q. Wei, B. Zhu and Y-D. Choi, Internal flow characteristics in the draft tube of a francis turbine, Journal of the Korean Society of Marine Engineering, 36 5 (2012) 618–626.
Q. Wei and Y-D. Choi, The influence of guide vane opening on the internal flow of a francis turbine, Journal of the Korean Society of Marine Engineering, 37 3 (2013) 274–281.
M. Nechleba, Hydraulic turbine: Their design and equipment, ARTIA, Prague (1957).
H. C. Radha, Hydraulic design of hydraulic machinery, International Editorial Committee Chairman, Duan C G, Secretary, A P Boldy (1997).
Z.-Y. Mei, Mechanical design and manufacturing of hydraulic machinery, Avebury Technical (1991).
G. Ingram, Basic concepts in turbomachinery, Bookboon (2009).
R. S. R. Gorla and A. A. Khan, Turbomachinery: Design and theory, Marcel Dekker Inc., New York (2003).
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Zhenmu Chen received his B.E. degree from Wenzhou University, China, and his M.S. degree from Mokpo National University, Korea. He is currently a doctorate candidate in the Graduate School, Department of Mechanical Engineering, Mokpo National University. His research interest includes fluid machinery and new & renewable energy.
Patrick Mark Singh received his B.E.Tech. degree from The University of the South Pacific and his M.S. degree from Mokpo National University, Korea. He is currently a doctorate candidate in the Graduate School, Department of Mechanical Engineering, Mokpo National University. His research interest includes fluid machinery and new & renewable energy.
Young-Do Choi received his B.S. and M.S. degrees from Korea Maritime University, and his Dr.Eng. from Yokohama National University, Japan. Since 2009, he has been a professor at Department of Mechanical Engineering of Mokpo National University, Korea. His research interests include fluid machinery and new & renewable energies, such as ocean energy, wind power, hydro power.
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Chen, Z., Singh, P. & Choi, YD. The effect of runner blade loading on the performance and internal flow of a Francis hydro turbine model. J Mech Sci Technol 30, 1617–1623 (2016). https://doi.org/10.1007/s12206-016-0317-0
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DOI: https://doi.org/10.1007/s12206-016-0317-0