不同参数影响下空间型管路冲蚀率的非线性回归分析  

Nonlinear Regression Analysis of Erosion Rate of Spatial Pipeline Based on Orthogonal Design

作　　者：吴泽兵 贺啸林 胡诗尧 姜雯 沈飞 WU Zebing;HE Xiaolin;HU Shiyao;JIANG Wen;SHEN Fei(School of Mechanical Engineering,Xi′an Shiyou University,Xi′an Shaanxi 710065,China)

机构地区：[1]西安石油大学机械工程学院,陕西西安710065

出　　处：《润滑与密封》2024年第9期148-155,共8页Lubrication Engineering

摘　　要：针对压裂液中携带的固体颗粒对管道冲蚀磨损导致的管件失效问题,采用ANSYS-Fluent软件对不同流体参数以及结构参数下管道的冲蚀磨损进行数值模拟,得出入口流速、颗粒直径、质量流量、黏度、以及弯管直径与空间型管路最大冲蚀率的最佳非线性曲线拟合方程。研究表明:流速、颗粒直径、黏度分别与最大冲蚀速率成二次函数关系;质量流量、弯管直径分别与最大冲蚀速率成幂函数关系。通过正交试验研究各参数对最大冲蚀速率的综合影响,运用SPASS软件对拟合方程进行多元非线性回归分析,得到冲蚀磨损的预测模型。结果表明,得出的非线性回归方程拟合程度高,能较好地反映各因素对空间型管路最大冲蚀率的影响规律。In response to the serious erosion and wear damage caused by solid particles carried in fracturing fluid to pipelines and the failure of pipe fittings,ANSYS Fluent software was used to numerically simulate the erosion and wear of pipelines under different fluid and structural parameters,and the optimal nonlinear curve fitting equation for inlet flow rate,particle diameter,mass flow rate,viscosity,and the maximum erosion rate of spatial pipelines with the elbow diameter was obtained.It is found that the relationship between the flow velocity,particle diameter and viscosity is a quadratic function with the maximum erosion rate,respectively.The relationship between the mass flow rate and the diameter of the elbow is powered functions with the maximum erosion rate,respectively.The comprehensive influence of various parameters on the maximum erosion rate was studied by orthogonal test,and SPASS software was used to perform multiple nonlinear regression analysis on the fitting equation,a predictive model for erosion wear was obtained.The results indicate that the obtained nonlinear regression equation has a high degree of fitting and can well reflect the influence of various factors on the maximum erosion rate of spatial pipelines.

关 键 词：空间型管路 冲蚀率 曲线拟合 正交试验 非线性回归 

分 类 号：TH117[机械工程—机械设计及理论]