90°圆截面弯管内稠油流动特性分析

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顾效源,潘福奎,汪文杰,张黎明^*

中国石油大学(华东)石油工程学院，山东青岛 266580

收稿日期:2018-03-22修回日期:2018-05-29出版日期:2019-02-22发布日期:2019-02-12
通讯作者:张黎明

Numerical simulation on flow characteristics of heavy oil through circular-sectioned 90° bends

Xiaoyuan GU, Fukui PAN, Wenjie WANG, Liming ZHANG^*

School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China

Received:2018-03-22Revised:2018-05-29Online:2019-02-22Published:2019-02-12
Contact:Ming LiZHANG

摘要/Abstract

摘要： 采用计算流体力学三维层流模型模拟，研究了温度50~75℃、雷诺数Re=300~800、弯管内径D=50.7~131.7 mm、弯径比B=0.75~3.0条件下稠油在90°弯管内的阻力特性，分析了弯管局域阻力系数波动的机理。结果表明，随温度升高、入口雷诺数下降、弯管直径增加，局域阻力系数提高；在弯管0~15°范围内阻力下降，原因是弯管内形成双纵向涡，75°到弯管后0.5D范围内阻力下降，原因是弯管内形成4个纵向涡；弯管的弯径比对局域流动阻力影响很大，B=0.75时相邻截面最大落差达B=3.0时的28.35倍，但管道进出口阻力仅为1.68倍，原因是弯径比B≤1.0时，弯管后1.0D范围内侧形成了局域低压区，对应位置出现流向涡旋，同时弯管后0.5D截面稠油剪切速率达到峰值。

引用本文

顾效源潘福奎汪文杰张黎明. 90°圆截面弯管内稠油流动特性分析[J]. 过程工程学报, 2019, 19(1): 83-90.
Xiaoyuan GU Fukui PAN Wenjie WANG Liming ZHANG. Numerical simulation on flow characteristics of heavy oil through circular-sectioned 90° bends[J]. Chin. J. Process Eng., 2019, 19(1): 83-90.

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