摘要
环状流输送稠油技术正受到越来越多的关注。在水环输送高黏原油的过程中,不可避免地会经过弯管等部件,在弯管中离心力的作用下核心油流靠近壁面,容易失稳。运用FLUENT软件,采用VOF模型针对90°弯管进行油水环状流的数值模拟研究,通过不同界面张力的对比研究其维稳特性。结果表明,界面张力对90°弯管中水环的稳定性有显著影响,在模拟条件下油水界面张力增大至0. 25 N/m时对水环通过90°弯管的维稳效果最好。
The technology of heavy oil transportation by core-annular flow is attracting more and more attention. In the process of transporting high-viscosity crude oil in the water film, it will inevitably pass through the elbow pipe and other components. Under the effect of centrifugal force in the elbow, the core oil flow is close to the wall surface, and it is easy to lose stability. In this paper, the FLUENT software is used to study the numerical simulation of the oil water annular flow in the 90° elbow by using the VOF model. Its stability characteristics are studied through comparison of different interfacial tensions. The results show that the interfacial tension has a significant effect on the stability of the core annular flow in the elbow. Under the simulated conditions, the interfacial tension increases to 0.25 N / m, which is the best for the stability of the core annular flow through the 90° elbow.
作者
吴君强
蒋文明
杜仕林
刘喆
Wu Junqiang;Jiang Wenming;Du Shilin;Liu Zhe(College of Pipeline and Civil Engineering,China University of Petroleum(East China),Qingdao,Shandong,266580,China;China Petroleum Pipeline Bureau Engineering Co.,Ltd,Langfang,Hebei,065000,China;Changqing Oilfield Company No.3 Oil Production Plant,Yinchuan,Ningxia,750011,China)
出处
《天然气与石油》
2019年第1期20-25,共6页
Natural Gas and Oil
基金
国家自然科学基金项目(51406240)
山东省自然科学基金项目(ZR 2014 EEQ 003)
中央高校基本科研业务费专项资金(18 CX 02082 A/17 CX 02064 A/14 CX 02211 A/12 CX 04070 A)
青岛市源头创新计划应用基础研究项目(17-1-1-88-jch)
关键词
弯管
水环
稠油
数值模拟
Elbow
Core annular
Heavy oil
Numerical simulation
