为了研究灯泡贯流式水轮机在固液两相流动下过流部件的磨损程度，以某水电站实际运行的水轮机为研究对象，基于Particle模型和非均相模型，对水轮机内部流场进行数值模拟。分析了体积分数为1%，泥沙粒径为0.01、0.05、0.10和0.25 mm时，过流部件工作面和背面的固体颗粒相的滑移速度及固相体积分数。结果表明：随着颗粒粒径的增大，桨叶上固体颗粒相的滑移速度减小、导叶上滑移速度增大；在浆叶进水边和轮缘，导叶的进水边和轮毂处固体颗粒相的体积分数较大，磨损较为严重，与现场真机照片磨损位置相同，说明采用 Particle 模型和非均相模型能准确地模拟固液两相流水轮机内的流动规律。

In order to study the degree of wear of the components of the bulb tubular turbine under the solidliquid twophase flow,the actual operation of the turbine of a hydropower station is studied.Based on the Particle model and the heterogeneous model,the internal flow field of the turbine is numerically simulated.The slip velocity and sediment volume fraction of the solid particle phase on the front and back of the component are analyzed when the incoming sediment volume fraction is 1% and the sediment particle size is 0.01 mm,0.05 mm,0.1 mm,0.25 mm.The results show that as the particle diameter increases,the slip velocity of the solid particle phase on the blade decreases and the slip velocity on the vane increases.At the inlet edge and the rim of the blade,the volume fraction of the solid particle phase at the inlet edge and the hub of the vane is larger,and the wear is more serious.This result agrees well with reality on the wear position,indicating that the particle model and the heterogeneous model can accurately simulate the flow field in the solidliquid twophase flow turbine.

TK73

国家重点研发计划专项（2018YFB0905205-05）；西华大学（xjjg2017083）；西华大学研究生创新基金（ycjj2018039）