Coherent laminar and turbulent motion of toroidal vortex bundles

被引：17

作者：

Wacks, D. H. ^{[1
]}

Baggaley, A. W. ^{[2
]}

Barenghi, C. F. ^{[3
,4
]}

机构：

[1] Newcastle Univ, Sch Mech & Syst Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[2] Univ Glasgow, Sch Math & Stat, Glasgow G12 8QW, Lanark, Scotland

[3] Newcastle Univ, Joint Quantum Ctr JQC Durham Newcastle, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[4] Newcastle Univ, Sch Math & Stat, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

PHYSICS OF FLUIDS | 2014年 / 26卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

RINGS; VISUALIZATION; CIRCULATION; DYNAMICS; HELIUM;

D O I：

10.1063/1.4864659

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Motivated by experiments performed in superfluid helium, we study numerically the motion of toroidal bundles of vortex filaments in an inviscid fluid. We find that the evolution of these large-scale vortex structures involves the generalized leapfrogging of the constituent vortex rings. Despite three dimensional perturbations in the form of Kelvin waves and vortex reconnections, toroidal vortex bundles retain their coherence over a relatively large distance (compared to their size), in agreement with experimental observations. (C) 2014 AIP Publishing LLC.

引用

页数：17

共 43 条

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