摘要
采用计算流体动力学(软件)(computational fluid dynamics,CFD)冲蚀磨损模型仿真模拟原油输运过程中的液固两相流。对弯径比为2的圆形管道典型部件在不同的温度、流速、压力和固体颗粒体积浓度下进行仿真模拟,得出管道冲蚀区域分布与冲蚀率,当压力≤6 MPa时,压力对弯头冲蚀结果的影响可以忽略。仅增大流速,弯头平均冲蚀率随之增大。仅增大温度,40℃工况下,弯头平均冲蚀率达到最大值;60℃工况下,弯头平均冲蚀率达到最低值。固体颗粒体积浓度的增长与弯头平均冲蚀率的增长基本呈线性关系。
A DPM erosion model was built to simulate the liquid-solid flow in crude oil transport pipelines based on Computational Fluid Dynamics(CFD). More specifically, erosion area distribution and erosion rates were obtained by simulating the typical parts of circular elbows(with an R/D ratio of 2) under different temperatures, flow velocities and pressures as well as different volume concentrations of solid particles. Studies indicate that erosion impact of pipeline elbows can be neglected when the pressure exceeds 6MPa. The mean erosion rate of bends gets larger and larger only when the flow velocity accelerates. It is up to the maximum value only under the working condition of 40 degrees centigrade and the minimum value under the working condition of 60 degrees centigrade. The volume concentration of solid particles increases with the mean erosion rate of bends in a linear way.
出处
《中国测试》
CAS
北大核心
2015年第5期116-120,共5页
China Measurement & Test
基金
科技部质检公益专项(2012424026)
