Motion of vortex ring with tracer particles in superfluid helium

被引：13

作者：

Barenghi, Carlo F. ^{[1
]}

Sergeev, Yuri A. ^{[2
]}

机构：

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

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

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 02期

关键词：

superfluid helium-4; superfluidity; turbulence; vortices; QUANTIZED VORTICES; QUANTUM TURBULENCE; IMAGE VELOCIMETRY; LIQUID-HELIUM; PIV; COUNTERFLOW;

D O I：

10.1103/PhysRevB.80.024514

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recent experiments on quantum turbulence in superfluid helium made use of small tracer particles to track the motion of quantized vortices, determine velocity statistics and visualize vortex reconnections. A problem with this visualization technique is that it may change the turbulent flow which it visualizes. To address this problem, we derive and solve the equations of motion of a quantized vortex ring which contains a given number of particles trapped on the vortex core, hence derive a quantitative criterion to determine in which measure small particles trapped in quantized vortices affect vortex motion. Finally we apply the criterion to a recent experiment.</p>.

引用

页数：5

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