基于DDPM模型的高压管汇冲蚀磨损数值模拟  

Numerical Simulation of High Pressure Pipe Sink Erosion and Wear Based on DDPM Model

作　　者：黄华宝 钱玉宝[1] 郭旭涛 余米森 曹新建 HUANG Hua-bao;QIAN Yu-bao;GUO Xu-tao;YU Mi-sen;CAO Xin-jian(School of Mechanical Engineering,Yangtze University,Jingzhou 434023,China)

机构地区：[1]长江大学机械工程学院,荆州434023

出　　处：《科学技术与工程》2023年第26期11195-11201,共7页Science Technology and Engineering

基　　金：国家自然科学基金(51974035)。

摘　　要：为探究考虑颗粒间相互作用的高压管汇冲蚀磨损机理,通过计算流体力学方法研究了高压管汇固液两相流的速度、压力、湍动能和湍流耗散率,通过正交试验设计25组仿真,对比分析DDPM模型和DPM模型的数值模拟结果,得到工况参数、空间夹角、颗粒特性对高压管汇冲蚀速率的影响规律。结果表明:在用计算流体动力学方法对高压管汇进行冲蚀磨损数值模拟时,DDPM模型对高压管汇岐型三通冲蚀磨损的预测精度好于DPM模型;空间夹角在60°~90°时,最大冲蚀集中在三通相贯线和相贯线两侧面;空间夹角在30°~45°时,最大冲蚀集中在三通相贯线处;随着颗粒形状系数减小,流速4 m/s到12 m/s,冲蚀速率逐渐增大,最大冲蚀速率变大1.4倍,并在流速最大时达到峰值;结论可为高压管汇结构优化和剩余服役寿命预测提供理论支撑。In order to explore the erosion wear mechanism of high pressure manifold considering the interaction between particles,the velocity,pressure,turbulent kinetic energy and turbulent dissipation rate of solid-liquid two-phase flow in high-pressure manifold were studied by computational fluid dynamics method.25 sets of simulation were designed by orthogonal experiment,and the numerical simulation results of DDPM model and DPM model were compared and analyzed.The effects of operating parameters,space Angle and particle characteristics on the erosion rate of high pressure manifold are obtained.The results show that the DDPM model is better than DPM model in predicting the erosion wear of manifold manifold when CFD method is used to simulate the erosion wear of high-pressure manifold manifold.When the space angle is between 60°and 90°,the maximum erosion is concentrated on the two sides of the three-way intersecting line and the intersecting line.When the space Angle is between 30°and 45°,the maximum erosion is concentrated at the junction line of tee.With the decrease of particle shape coefficient,the erosion rate increases gradually from 4 m/s to 12 m/s,and the maximum erosion rate increases by 1.4 times,reaching the peak value at the maximum flow rate.The conclusion can provide theoretical support for structural optimization and remaining service life prediction of high-pressure manifold.

关 键 词：高压管汇 三通 正交试验 固液两相流 DDPM模型 

分 类 号：TE935[石油与天然气工程—石油机械设备]