Abstract
We present a new method for the computation of hydraulic axial thrust of Francis hydro-turbine. This approach combines the computation of axial thrust on the crown, band and blade by using the numerical simulation and calculation of the pressure distribution outside the crown and band based on the theory of fluid mechanics. The axial thrusts are calculated for different flow conditions with various suction head and flow rate. The calculated results are consistent with that of experimental test on the prototype hydro-turbine, and this combination is proven to be an effective way to assess the magnitude of hydraulic axial thrust for hydro-turbine. Also, the suction head of the turbine is shown to have significant influence on the hydraulic axial thrust.
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Recommended by Associate Editor Jun Sang Park
Xing-Ying Ji received his Ph.D. in Water Conservancy and Hydropower Engineering from Wuhan University in 2013. He is currently a senior engineer of State Key Laboratory of Hydropower Equipment in Harbin, China. His research interests are hydraulic design of hydroturbine and development of pumped storage technology.
Xiao-Bin Li received his Ph.D. in Engineering Thermophysics from Harbin Institute of Technology in 2012, and did post-doc research on microscaled flow at the University of Tokyo in 2015. He is currently a lecturer of School of Energy Science and Engineering at Harbin Institute of Technology in Harbin, China. His research interests are in the fields of fluid machinery, microscaled flow and heat transfer and experimental fluid mechanics.
Wen-Tao Su received his Ph.D. in Engineering Thermophysics from Harbin Institute of Technology in 2014. His research interests are in the fields of fluid machinery and computational fluid dynamics.
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Ji, XY., Li, XB., Su, WT. et al. On the hydraulic axial thrust of Francis hydro-turbine. J Mech Sci Technol 30, 2029–2035 (2016). https://doi.org/10.1007/s12206-016-0409-x
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DOI: https://doi.org/10.1007/s12206-016-0409-x