An investigation of a gas-liquid swirling flow with shear-thinning power-law liquids | |
Liu S(刘硕)1; Zhang J(张健)1; Xu JY(许晶禹)1,2 | |
通讯作者 | Zhang, Jian(zhangjian@imech.ac.cn) ; Xu, Jing-yu(xujingyu@imech.ac.cn) |
发表期刊 | PHYSICS OF FLUIDS |
2022-07-01 | |
卷号 | 34期号:7页码:17 |
ISSN | 1070-6631 |
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. |
DOI | 10.1063/5.0099895 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000829722500007 |
关键词[WOS] | LARGE-EDDY SIMULATION ; AXIAL-FLOW ; SEPARATOR |
WOS研究方向 | Mechanics ; Physics |
WOS类目 | Mechanics ; Physics, Fluids & Plasmas |
资助项目 | National Natural Science Foundation of China[12102436] ; Strategic Priority Research Program of the Chinese Academy of Science[XDB22030101] |
项目资助者 | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Science |
论文分区 | 一类/力学重要期刊 |
力学所作者排名 | 1 |
RpAuthor | Zhang, Jian ; Xu, Jing-yu |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/89789 |
专题 | 流固耦合系统力学重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, 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. |
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