中文摘要：

基于离散相模型结合弹塑性压痕破裂理论对电潜泵叶轮磨损进行数值计算研究,对不同工况下的叶轮磨损进行分析,得到电潜泵叶轮的磨损规律,运用三坐标测量机对实际工作的电潜泵叶轮中存在的磨损情况进行测量,以实现对数值模拟结果的验证。结果表明：叶轮磨损加剧的颗粒粒径临界点是0.06-0.08 mm;磨损最严重的区域位于叶片凹面;转速、颗粒粒径增大均会加剧冲蚀磨损,导致磨损严重的区域由凹面中部的几个零散点向整个面扩展;数值模拟结果与验证结果吻合较好。

英文摘要：

Based on discrete phase model and elastic-plastic indentation fracture theory,erosion in the electrical submersible pump impeller was numerically simulated. The effect of particle size and impeller speed on the erosion of the electrical submersible pump impeller was predicted by a particle erosion model. In order to verify the results of numerical simulation,the erosion in an electrical submersible pump in operation was measured by the coordinate measuring machine. The results show that the critical diameter with the highest erosion rate is 0. 06- 0. 08 mm. The erosion mainly occurs in the center of the concave surface of blade. With the increase of particle size and impeller speed,the erosion area will extend. The numerical simulation results agree well with the testing results.