With the development of computational fluid dynamics and the technology of computing,some CFD software about three dimensional viscous flows are successfully used to analyze the characteristic in internal flow field of turbines. Because the flow within the volute is very complicated, the characteristics of the flow within the volute are known very less presently. At the same time, numeration in the guiding device has obtained some development, but the numeration and analysis on solid-liquid fluid with sediment is still absent, especially the integrated analysis and numerical simulation of coupled computed in diversion components and guiding device. So it is very necessary to study the solid-liquid flow in diversion components and guiding device. After analyzing the physical mechanism and discussing the performance and hydraulic loss of diversion components on the condition of solid-liquid fluid, we can get the optimize measure of it and give the design some advice.
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