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Numerical study of the formation of vortex rings with reversed rotation in viscoelastic liquids

文献类型：期刊论文

作者Yuan CG(袁晨光)2; Xu D(徐多)1,2
刊名PHYSICS OF FLUIDS
出版日期2024-08-01
卷号36期号:8页码:7
ISSN号1070-6631
DOI10.1063/5.0223213
通讯作者Xu, Duo(duo.xu@imech.ac.cn)
英文摘要Laminar vortex rings in viscoelastic liquids display distinct characteristics compared to the Newtonian counterparts. One interesting scenario is that the core of a vortex ring rotates reversely (in contrast to the Newtonian counterpart), termed as the "negative vortex ring." This phenomenon was initially observed experimentally by Palacios-Morales et al. ["Negative vortices: The formation of vortex rings with reversed rotation in viscoelastic liquids," Phys. Fluids 27, 051703 (2015)]. In this study, we numerically investigate the formation of the negative vortex rings through controlling the polymer viscosity ratios, Weissenberg numbers, and Reynolds numbers. In the simulations, we indeed observe the formation of negative vortex rings. In the examination of the effects of flow parameters, both the shear thinning and viscoelastic effects of the fluids are found to be necessary for the formation, while the flow inertia suppresses the formation. The concurrent existence of high shear and low extensional viscosities in flow fields seems to be a critical condition for the formation.
分类号一类/力学重要期刊
资助项目National Natural Science Foundation of China10.13039/501100001809[92152106] ; National Natural Science Foundation of China10.13039/501100001809[12372224] ; National Natural Science Foundation of China10.13039/501100001809[11988102] ; National Natural Science Foundation of China[YSBR-087] ; Chinese Academy of Sciences (Project for Young Scientists in Basic Research)[XDB0620102] ; Strategic Priority Research Program
WOS研究方向Mechanics ; Physics
语种英语
WOS记录号WOS:001292552900028
资助机构National Natural Science Foundation of China10.13039/501100001809 ; National Natural Science Foundation of China ; Chinese Academy of Sciences (Project for Young Scientists in Basic Research) ; Strategic Priority Research Program
其他责任者Xu, Duo
源URL[http://dspace.imech.ac.cn/handle/311007/96346]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Yuan CG,Xu D. Numerical study of the formation of vortex rings with reversed rotation in viscoelastic liquids[J]. PHYSICS OF FLUIDS,2024,36(8):7.
APA 袁晨光,&徐多.(2024).Numerical study of the formation of vortex rings with reversed rotation in viscoelastic liquids.PHYSICS OF FLUIDS,36(8),7.
MLA 袁晨光,et al."Numerical study of the formation of vortex rings with reversed rotation in viscoelastic liquids".PHYSICS OF FLUIDS 36.8(2024):7.

入库方式： OAI收割

来源：力学研究所

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