摘要
为了减少由流通性能和流量分配等问题产生的高压管汇窜动、振动和开裂等问题,基于计算流体动力学技术,在考虑管道边界层效应的情况下,以时均N-S方程为基本控制方程,采用可实现κ-ε双方程湍流模型,对不同排出口位置、联通管汇位置和排出口三通结构的井工厂高压管汇系统进行了三维全流场数值仿真研究。仿真结果表明,随着高压管汇的入口增加,主管内部平均流速向排出口方向逐渐增加,且在每个入口处均有速度峰值;主管汇流量从排出口有效面积较小的管汇向排出口有效面积较大的管汇串流,串流方向与主管汇流量大小无关;y形三通的排出口流量比约为1.5∶1.0,不能起到流量均分作用,且容易引起锐角冲蚀,从安全性考虑,应优先考虑T形三通。研究结果可为高压管汇系统的安全使用提供参考。
Based on computational fluid dynamics, considering the effect of the pipe boundary layer, taking time-averaged N-S equation as the basic equation and the realizable κ-ε dual-equation turbulence model, numerical simulation of three-dimensional full flow field of“well factory” high pressure manifold has been conducted under dif-ferent outlet position, connection pipe position and outlet tee joint structures. The simulation results show that with the increase of high-pressure manifold inlets number, the average velocity in the main pipe gradually increases to the outlet direction. There exists peak velocity at each inlet. The flow in the main pipe channels from the pipe with smaller effective outlet area to the pipe with larger effective outlet area. The channeling direction is independent of the flow rate of main pipe. The flow ratio of y tee outlet is about 1. 5∶1. 0, which cannot equally divide the flow and is prone to cause acute angle erosion. Considering the safety, priority should be given to T-shaped tee joint.
出处
《石油机械》
2016年第7期94-99,共6页
China Petroleum Machinery
基金
湖北省重大科技支撑计划资助项目"面向深海油气开发的水下闸阀设计及工程化研制"(2014BAA022)
中石化石油机械股份有限公司项目"压裂作业高压管汇系统可靠性研究"(JXGS15-018)
关键词
计算流体动力学
高压管汇
三通
流量分配
布局优化
CFD
high pressure manifold
tee joint
flowrate distribution
layout optimization
