锥形节流器内冲刷磨损的数值模拟

Numerical Simulation of Erosion Wear in Conical Restrictor

在注汽管道内固体颗粒对锥形节流元件的冲刷磨损是造成失效的重要因素。采用计算流体力学有限体积法对其进行数值模拟,研究了冲刷磨损量和切应力与注气量、颗粒直径、颗粒质量浓度的关系。结果表明,随着颗粒直径增大,管壁磨损相对集中于高速区,锥体磨损量增大;流量增大时,磨损量和切应力均增加;颗粒的质量浓度增加,磨损量增大。此研究可为节流元件的抗磨腐蚀研究和油田节流元件的失效预测提供理论指导。

In Gas injection pipeline the erosion wear of solid particle in cone throttling element was an important factor for causing failure .In this paper ,made by the method of computational fluid dynamics finite volume was used for the numerical simulation of the erosion abrasion and the degree to erosion abrasion and the relationship of the shear stress with the injection volume ,particle diameter and the particle content change were researched .The results showed that as the particle diameter increased ,the tube wall wear relatively focused on the high speed area ,the degree to the cone wear was increased .When the flow rate increased ,erosion rate and shear stress were increased .And when the particle concentration increased ,the quantity of the erosion abrasion was increased .So the research to the throttling element antifriction corrosion study and throttling element failure prediction would provide the theory guidance .