为了探索叶片包角在固液两相流下对高比转速离心泵非定常特性的影响,本文利用ANSYS CFX软件采用Mixture多相流模型对5种不同叶片包角离心泵的固液两相湍流进行了非定常数值模拟,分析了叶片包角对固液两相流离心泵瞬时扬程、压力脉动及径向力的影响。研究表明：随着叶片包角的增大(每增大10°),固液两相流离心泵的瞬时扬程有所降低,波动时间会延迟0.001 s,流道内及隔舌处的压力值越来越小,脉动幅值越来越大,压力波动时间向后延迟0.001 s,叶轮上的径向力会增大,隔舌处的径向力会减小,受力方均向顺时针偏转。不同包角下的固液两相流离心泵叶轮流道内的压力脉动主频均出现在转频处,隔舌处的压力脉动主频出现在叶频处。其中,叶片包角φ=120是叶轮流道内压力值和压力脉动幅值增减速度快慢的分界点；也是隔舌处的压力脉动幅值最小值。

In order to explore the effect of blade packet angle on the unsteady characteristics of centrifugal pump with high ratio speed in solid-liquid two-phase flow, this paper uses Ansys CFX software to simulate the solid-liquid two-phase turbulence of 5 kinds of different blade cladding centrifugal pump by using the mixture multiphase current model, and analyzes the instantaneous lift of the blade cladding to the solid-liquid Two , the effect of pressure pulsation and radial force. The results show that with the increase of blade packet angle (10° per increase), the instantaneous head of solid-liquid two-phase flow centrifugal pump decreases, the fluctuation time will delay 0.001 s, the pressure value in the runner and the diaphragm is getting smaller, the pulsating amplitude is getting larger, the pressure fluctuation time is delayed backward 0.001 s, the radial force on the impeller will increase, The radial force at the diaphragm decreases, and the forces are deflected clockwise. The main frequency of pressure pulsation in the rotating channel of solid-liquid two-phase flow centrifugal pump under different packet angles appears at the frequency shift, and the main frequency of pressure pulsation at the septum is chunking. Among them, the blade packet angle φ=120 is the boundary point of the pressure value and the pressure pulsation amplitude increase and decrease speed in the leaf rotation channel, and also the minimum value of the pressure pulsation amplitude at the diaphragm.

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