中文摘要：

运用相位多普勒粒子测速仪（PDPA）测量了旋流泵在最优工况下液固两相速度场。根据泵内流场特点,分别采用径向速度和轴向速度2种测量模式获得流场内一点的三维速度信息,通过分粒径法获得了各相在无叶腔与叶轮内的速度及对应的脉动值。对周向、轴向及径向速度分布曲线进行分析,揭示了液固两相在旋流泵内部的运动规律,提出了叶轮内固相速度总体上大于液相等观点。

英文摘要：

Phase Doppler particle anemometer （PDPA） was used to measure the velocity field of liquidsolid two-phase flow under the optimum operating condition of a vortex pump. Radial velocity and axial velocity models were adopted to obtain 3-D velocity information of one point according to the characteristics of inner flow field in vortex pump. Velocity and corresponding fluctuating velocity of each phase in volute and impeller were gained by separating particle diameters method. Motion rules of two-phase in the pump were revealed by the analysis on distribution curves of circumferential velocity, axial velocity and radial velocity. It is proposed that velocity of solid phase is basically larger than that of liquid phase in impeller and so on.