An investigation of a gas-liquid swirling flow with shear-thinning power-law liquids | |
Liu S(刘硕)2; Zhang J(张健)2; Xu JY(许晶禹)1,2 | |
刊名 | PHYSICS OF FLUIDS |
2022-07-01 | |
卷号 | 34期号:7页码:17 |
ISSN号 | 1070-6631 |
DOI | 10.1063/5.0099895 |
通讯作者 | Zhang, Jian(zhangjian@imech.ac.cn) ; Xu, Jing-yu(xujingyu@imech.ac.cn) |
英文摘要 | A gas-liquid swirling flow with shear-thinning liquid rheology exhibits complex behavior. In order to investigate its flow characteristics, experiments and computational fluid dynamics (CFD) simulations are conducted based on dimensional analysis. A Malvern particle size analyzer and electrical resistance tomography are applied to obtain the bubble size distribution and section void fraction. A Coriolis mass flowmeter is applied to obtain the mixture flow rate and mixture density for an entrance gas volume fraction smaller than 7%. The CFD coupled mixture multiphase model and large eddy simulation model are applied, considering the liquid shear-thinning power-law rheology. The results show that the swirling flow can be divided into developing and decaying sections according to the swirl intensity evolution in the axial direction. A gas-liquid swirl flow with shear-thinning liquid prohibits a core-annulus flow structure. A smaller index n contributes to maintaining the development of the swirl flow field and its core-annulus flow structure so that the swirl flow can form over a shorter distance with a stronger intensity. For a more uniform distribution of the apparent viscosity, the gas column in the pipe center is thinner. On the other hand, a larger consistency k enlarges the stress tensor. The amplitude of the velocity and the pressure of the core-annulus flow structure are reduced. A weaker swirl intensity appears with a wider gas column appearing as a consequence. Furthermore, the swirl number decays with an exponential behavior with parameters sensitive to the consistency k and index n of the decaying section of the swirling flow field. These are beneficial to gas-liquid separator design and optimization when encountering the shear-thinning power-law liquid phase in the petroleum industry. Published under an exclusive license by AIP Publishing. |
分类号 | 一类/力学重要期刊 |
资助项目 | National Natural Science Foundation of China[12102436] ; Strategic Priority Research Program of the Chinese Academy of Science[XDB22030101] |
WOS关键词 | LARGE-EDDY SIMULATION ; AXIAL-FLOW ; SEPARATOR |
WOS研究方向 | Mechanics ; Physics |
语种 | 英语 |
WOS记录号 | WOS:000829722500007 |
资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Science |
其他责任者 | Zhang, Jian ; Xu, Jing-yu |
内容类型 | 期刊论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/89788] |
专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; |
推荐引用方式 GB/T 7714 | Liu S,Zhang J,Xu JY. An investigation of a gas-liquid swirling flow with shear-thinning power-law liquids[J]. PHYSICS OF FLUIDS,2022,34(7):17. |
APA | 刘硕,张健,&许晶禹.(2022).An investigation of a gas-liquid swirling flow with shear-thinning power-law liquids.PHYSICS OF FLUIDS,34(7),17. |
MLA | 刘硕,et al."An investigation of a gas-liquid swirling flow with shear-thinning power-law liquids".PHYSICS OF FLUIDS 34.7(2022):17. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论