油水两相流弯管内流动特性模拟研究  

Numerical Simulation of Oil-water Two-phase Flow Characteristic in Bend Pipe

作　　者：宋扬 罗佳琪 张洪政 葛新灿 乔英云[3] 王海萍[3] Song Yang;Luo Jiaqi;Zhang Hongzheng;Ge Xincan;Qiao Yingyun;Wang Haiping(COSCO SHIPPING SHIPYARD(Nantong)Co.,Ltd.,Nantong 226000,China;COSCO SHIPPING(Qidong)Offshore Co.,Ltd.,Nantong 226000,China;College of Chemistry and Chemical Engineering,China University of Petroleum,Qingdao 266580,China)

机构地区：[1]南通中远海运船务工程有限公司,江苏南通226000 [2]启东中远海运海洋工程有限公司,江苏南通226000 [3]中国石油大学(华东)化学化工学院,山东青岛266580

出　　处：《山东化工》2023年第24期152-156,共5页Shandong Chemical Industry

基　　金：国家工业和信息化部高技术船舶项目-海上天然气大流量处理工艺关键技术研究(CJ09N20)。

摘　　要：弯管在输油管道中较为常见,多相流在突遇弯管时,易使流体的速度与压力发生突变,严重影响管道的安全输送。采用标准k-ε模型,运用fluent软件进行仿真计算,模拟分析水平弯管内油水两相流动特性,研究不同油黏度、不同油水比例及不同流速度下的油水流动规律。结果表明:弯管内最大压力分布在外侧,最小压力分布在内侧;最大流速分布在弯管内侧以及弯管后直管段外侧。另外,弯管压降随原油黏度、原油含水率及流体入口速度的增大而增大,管内的最大流速与原油黏度以及流体入口速度成正相关,与原油含水率成负相关。Bends are common in oil pipelines,while oil-water two-phase flow in the elbows is easy to cause velocity and pressure mutation,which seriously affects the safety of pipeline transportation.In this paper,the standard k-εmodel and fluent software are used to simulate and analyze the characteristics of oil-water two-phase flow in a horizontal bend.,and the pressure and velocity distribution in the flow field in the elbow are obtained.Then,the flow laws under different crude oil viscosity,crude oil water content and fluid inlet velocity are studied.The results show that the maximum pressure is near the outer wall and the minimum pressure is near the inner wall in the elbow.The maximum flow velocity is distributed on the inner wall of the elbow and the outer side of the straight pipe behind the elbow.In addition,the pressure drop of the elbow increases with the increase of crude oil viscosity,crude oil water content and fluid inlet velocity.The maximum flow velocity in the pipe increases with the increase of crude oil viscosity and fluid inlet velocity,and decreases with the increase of crude oil water content.The results of analysis can provide reference for oil transportation and pipeline design.

关 键 词：油水两相流 弯管 流动特性 压降 最大流速 

分 类 号：TE93[石油与天然气工程—石油机械设备]