Study on the Refomation of Francis Turbine Based on CFD

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Abstract:

Based on CFD software, Navier-Stokes equations, Sparlart-Allmaras turbulence model and the structure mesh method, the whole flow passage of Francis turbine were 3-D numerical simulated. By CFView, the distribution of velocity vector and static pressure in the flow passages through flow field were analyzed, which explained the shortcomings of design and its incidental problems of lower discharge capacity and lower efficiency. Consequently the improvement of the runner alone was promoted, and which could be proved to be good results.

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Periodical:

Advanced Materials Research (Volumes 516-517)

Pages:

669-672

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Online since:

May 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] Yongzhong Zeng Xiaobing Liu, Numerical Prediction. of 3-d Turbulent Flow and Pressure Fluctuation visitor Turbines for Francis within does not be LES, the 7th national water dynamics conference [C](2005,8 )

Google Scholar

[2] Xiaobing Liu. The liquid-solid two-phase flow and the numerical simulation in turbine machinery [M].beijing: China Water Conservancy and Hydropower press. ( 1995.)

Google Scholar

[3] Liangjun Cheng. Turbine [M].Beijing: Mechanical industry press( 1981)

Google Scholar

[4] Tianmao Xu, Yun Zeng etc, Yi Wang turbine runner, 3-d viscous flow numerical calculation model [J], Journal of Yunnan University, 1999,22 (4) : P36-41.

Google Scholar

[5] Xueyi Ji. Three-dimension turbulent flow calculation method in small Francis wheel compatibilizing retrofit applications [J]. Journal of Gansu Province, 2001, 27 (1) : 53-55.

Google Scholar

[6] T Bui.A parallel finite-volume algorithm for large-eddy simulation of turbulent flows [J].Computer& Fluids.2000, 29 (5):877-9 1 5.Fluid Machinery. NewYork(1988.)

DOI: 10.1016/s0045-7930(99)00040-7

Google Scholar

[7] Fu jun Wang. Computational fluid dynamics (CFD software analysis - principle and application ) [M]. Beijing: Tsinghua University press(2004)

Google Scholar