Abstract：In order to study the transient flow characteristics of the solid-liquid two-phase flow in rotor-stator cascades,a centrifugal pump with radial diffusers was chosen as the object of study and its model was established. The structured grid was finished and the three dimensional flow field was simulated based on the mixture multiphase model, the detached eddy simulation model and the user defined function. The internal transient flow was analyzed. The results obtained show that the area of minimum pressure located at the inlet of blade suction side becomes wide during the transition process. Simultaneously, the area of the highest pressure which is at the blade pressure side and near the impeller tip becomes shrinking. The vortexes in the channel of the rotor cascades evolves constantly and vortexes are formed gradually at the inlet of the rotor blade because of the turbulence intensity as the flow rate becomes larger. The solid-phase deposits at the outlet of the stator cascades easily at small flow rates. With the flow rate increases, the global volume fraction of solid-phase decreases and its distribution becomes homogeneous on the meridian middle streamline of the rotor cascades.
韩伟, 岳婷, 李仁年, 金毅, 蒋雷, 胡鹏林. 动静叶栅内固液两相过渡过程的数值研究[J]. 排灌机械工程学报, 2015, 33(2): 111-115.
Han Wei, Yue Ting, Li Rennian, Jin Yi, Jiang Lei, Hu Penglin. Numerical analysis of transition process of solid-liquid two-phase in rotor-stator cascades. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(2): 111-115.
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