基于DPM模型的某型号水轮机固定导叶泥沙磨损模拟与实验研究  

Simulation and Experimental Research on Sediment Abrasion of Stay Vane of a Hydraulic Turbine Based on DPM Model

作　　者：司序 曾永忠[1] 刘小兵[1] SI Xu;ZENG Yongzhong;LIU Xiaobing(Key Laboratory of Fluid and Power Machinery of Ministry of Education,Xihua University,Chengdu 610039,Sichuan,China)

机构地区：[1]西华大学流体及动力机械教育部重点实验室,四川成都610039

出　　处：《水力发电》2021年第6期80-83,共4页Water Power

基　　金：国家重点研发专项资助项目(2018YFB0905200)。

摘　　要：含沙水对水轮机固定导叶的磨蚀不仅与流速大小、泥沙浓度有关,而且还和含沙水在过流表面速度方向有关。为了研究含沙水对某型号水轮机固定导叶冲蚀作用,验证DPM模型(Discrete Phase Model)对水轮机固定导叶磨损模拟的有效性并确定固定导叶表面重点磨损部位,应用磨损模型和DPM模型对某型号水轮机固定导叶进行数值模拟,并将导叶表面的磨损率的数值模拟结果与实验数据相对比,预估和验证了该水轮机固定导叶的在额定工况下的磨损情况,为该水轮机的固定导叶后期的抗磨损设计提供了参考依据。The abrasion of sand-bearing water on the stay vane of hydraulic turbine is not only related to the magnitude of flow velocity and the sediment concentration,but also to the direction of sand-bearing water flow on the flow surface.In order to study the erosion effect of sand-bearing water on the stay vane of a certain type of turbine,verify the effectiveness of discrete phase model(DPM)on the simulation of stay vane abrasion and determine the key abrasion parts on the surface of stay vane,the erosion model and DPM model are used to simulate the stay vane of a certain type of turbine.The numerical simulation results of the abrasion rate of stay vane surface are compared with the experimental data,and the abrasion of stay vane on rated operation condition is estimated and verified,which will provide references for the abrasion resistance design of stay vane in the future.

关 键 词：水轮机 固定导叶 泥沙磨损 DPM模型 磨损率 模拟 实验 

分 类 号：TM312[电气工程—电机]