基于CFD-DPM模拟的流体机械叶轮冲蚀磨损检测方法  

Detection Method for Erosion and Wear of Fluid Mechanical Impellers Based on CFD-DPM Simulation

作　　者：郭博锐 GUO Borui(Xihua University,Chengdu 610000)

机构地区：[1]西华大学,成都610000

出　　处：《现代制造技术与装备》2025年第3期32-34,共3页Modern Manufacturing Technology and Equipment

摘　　要：流体机械中多相流之间的相互作用复杂,导致颗粒运动和冲蚀磨损难以描述,检测准确性低。为此,研究基于计算流体动力学-离散相模型(Computational Fluid Dynamics-Discrete Phase Model,CFD-DPM)模拟的流体机械叶轮冲蚀磨损检测方法。利用PeEA软件建立带有磨损损伤的叶轮三维模型,并采用适应性强的非结构化网格进行划分。运用CFD-DPM模拟单个粒子在流体中的运移情况,提取数值模拟结果,使用冲蚀模型计算叶轮表面的冲蚀速率和冲蚀深度,并分析其分布规律以检测叶轮的冲蚀磨损情况。实验结果表明,该方法能精确模拟颗粒运动轨迹及碰撞情况,准确预测叶片背面冲蚀率和平均磨损率,与实际情况高度吻合,展现出高度可靠性和灵活性,验证了其在冲蚀磨损检测中的良好应用效果。The interaction between multiphase flow in fluid machinery is complicated,which makes particle movement and erosion wear difficult to describe and the detection accuracy is low.Therefore,a fluid machinery impeller erosion wear detection method based on Computational Fluid Dynamics-Discrete Phase Model(CFD-DPM)simulation is studied.A three-dimensional model of the impeller with wear damage was established using PeEA software,and an adaptable unstructured mesh was used for partitioning.CFD-DPM was used to simulate the movement of a single particle in the fluid,and the numerical simulation results were extracted.The erosion rate and depth of the impeller surface were calculated using the erosion model,and their distribution rules were analyzed to detect the erosion wear of the impeller.The experimental results show that the method can accurately simulate the particle movement trajectory and collision situation,accurately predict the erosion rate and average wear rate of the back of the blade,which is highly consistent with the actual situation,showing high reliability and flexibility,and verifying the good effect of the method in the erosion wear detection.

关 键 词：计算流体动力学(CFD) 离散相模型(DPM) 流体 机械叶轮 冲蚀 磨损 

分 类 号：TH117.1[机械工程—机械设计及理论]