[1]饶永超,常 凯,王树立,等.90°弯管内流体流动特点数值模拟[J].常州大学学报(自然科学版),2016,(03):65-69.[doi:10.3969/j.issn.2095-0411.2016.03.013]
　RAO Yongchao,CHANG Kai,WANG Shuli,et al.Numerical Simulation of Fluid Flow Characteristic in 90° Bend Pipe[J].Journal of Changzhou University(Natural Science Edition),2016,(03):65-69.[doi:10.3969/j.issn.2095-0411.2016.03.013]
点击复制

90°弯管内流体流动特点数值模拟()
分享到：

常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
期数:
2016年03期
页码:
65-69
栏目:
石油与天然气工程
出版日期:
2016-05-30

文章信息/Info

Title:
Numerical Simulation of Fluid Flow Characteristic in 90° Bend Pipe
作者:
饶永超1; 2; 常 凯1; 2; 王树立1; 2; 李建敏3; 杨敏官4; 杭 越1; 2
1. 江苏省油气储运技术重点实验室(常州大学),江苏 常州 213016; 2. 常州大学 石油工程学院,江苏 常州 213016; 3. 中石化中原油建工程有限公司,河南 濮阳 457001; 4. 江苏大学 能源与动力工程学院,江苏 镇江 212013
Author(s):
RAO Yongchao1; 2;  CHANG Kai1; 2;  WANG Shuli1; 2;  LI Jianmin3;  YANG Minguan4;  HANG Yue1; 2
1. Jiangsu Key Laboratory of Oil & Gas Storage and Transportation Technology, Changzhou University, Changzhou 213016, China; 2. School of Petroleum Engineering, Changzhou University, Changzhou 213016, China; 3. Sinopec Zhongyuan Youjian Engineering Co
关键词:
90°弯管;  k-ε模型;  流动特点;  数值模拟
Keywords:
90 ° bend pipe;  k-ε model;  flow characteristics;  numerical simulation
分类号:
TE 83
DOI:
10.3969/j.issn.2095-0411.2016.03.013
文献标志码:
A
摘要:
采用标准k-ε模型对90°弯管内部流场进行了三维数值模拟研究。模拟中弯管曲率半径与管径之比β=R/d分别为2.0、2.5、3.0和3.5,表观液速为0.5 m/s。通过建模和数值计算,研究了弯管内流场分布、压力分布以及速度矢量和流动轨迹等规律,并重点分析了不同β情况下的弯管中流场流动特点。结果表明:流体速度在弯管内不同截面内是逐渐变化的。由于离心力的作用,在流动后段出现二次流,加强了流体的扰动。同时,流体进入弯道后管道内部不同半径处压力不同,弯管内壁面附近处压力较小,弯管外壁面处压力较大。不同曲率半径与直径之比对管内流速分布有较大影响。β由小增大时,内侧流速逐渐变小,实际的管道设计与施工中尽量使用β较大的弯头附件以降低对管道内壁的冲击。
Abstract:
The characteristic of fluid flow field in 90° bend pipe was numerically simulated using the standard k-ε model. The ratio of bend radius of curvature and diameter β=R/d were respectively 2.0, 2.5, 3.0 and 3.5, and superficial liquid velocity was 0.5 m/s. The flow field distribution, pressure distribution and velocity vector and the flow path were investigated, and flow characteristics under different β in 90° bend pipe were intensively studied.The results showed that the flow field in the 90°bend pipe was gradually changing. The secondary flow would appear in the back, due to the effect of centrifugal force, which strengthened the disturbance of the fluid. The pressure on both sides of the inside and outside also changed because of the bend flow. The pressure was small inside the bend, and the pressure was big outside the bend. The different ratio of bend radius of curvature and diameter had a great influence on velocity distribution. The inside velocity became gradually smaller with an increase of β. The large β of bend pipe reduced the impact on the pipe wall in the actual pipeline design and construction.

参考文献/References:

[1] 王树立,赵会军. 弯管中的气液两相流水击现象[J]. 西安石油大学学报(自然科学版),2005,20(1):54-56.
[2]SUDO K, SUNIDA M, HIBARA H. Experimental investigation on turbulent flow in a circular- sectioned 90-degree bend[J]. Experiments in Fluids, 1998, 25: 42-49.
[3]TAYLOR A, WHITELAW J H, YlANNESK I S M. Curved ducts with strong secondary motion, velocity measurements of developing laminar and turbulent flow[J]. Journal of Fluids Engineering, 1982, 104: 350-359.
[4]马皓晨,代翠,董亮,等. 90°方形弯管内部流场PIV试验[J]. 水利水电科技进展,2013,33(5):31-34.
[5]樊洪明,何钟怡,王小华. 弯曲管段内流动的大涡模拟[J]. 水动力学研究与进展,2001,16(1):78-83.
[6]梁德旺,王国庆,吕兵. 低速高湍流度90弯管流动数值模拟[J]. 南京航空航天大学学报,2000,32(4):381-387.
[7]龚斌,刘喜兴,杨帅,等. 90°圆形截面弯管内流动的大涡模拟[J]. 过程工程学报,2013,13(5):760-765.
[8]翟银平,王树立. 90°弯管管道螺旋流的数值模拟[J]. 常州大学学报(自然科学版),2011,23(2):36-39.

备注/Memo

备注/Memo:
收稿日期:2015-08-17。基金项目:国家自然科学基金资助项目(51574045)。作者简介:饶永超(1987—),男,江苏沛县人,博士生。通讯联系人:王树立(1957—),E-mail:wsl@cczu.edu.cn
更新日期/Last Update: 2016-05-20