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排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  0, Vol. Issue (): 14-    DOI:
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Numerical Analysis on the High Flow Area at Turbine Mode of The Pump Turbine
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Abstract  To research the character of the high flow area at turbine mode of the pump turbine, a hydraulic model was established based on a pumped storage station. The SST k- model and two kinds of grids were used to simulate the internal flow fields and the results of the two kinds of grids were compared with the test data .The results show that in the high flow area, there are periodical distribution vortexes in the runner’s flow passages with the increase of relative speed between the liquid and runner .The vortexes increase the energy loss and at the same time, the high speed of the liquid makes high quality grids necessary for simulation, and this is the reason why the high flow area is difficult to simulate. These conclusions can provide a theory basis for the analysis and simulation of the high flow area.
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Key wordspump turbine   high flow    structured grid   numerical analysis   SST k- model   flow characteristics     
Cite this article:   
. Numerical Analysis on the High Flow Area at Turbine Mode of The Pump Turbine[J]. Journal of Drainage and Irrigation Machinery Engin, 0, (): 14-.
 
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