Decay of counterflow turbulence in superfluid 4He

被引：38

作者：

Gao, J. ^{[1
,2
]}

Guo, W. ^{[1
,2
]}

L'vov, V. S. ^{[3
]}

Pomyalov, A. ^{[3
]}

Skrbek, L. ^{[4
]}

Varga, E. ^{[4
]}

Vinen, W. F. ^{[5
]}

机构：

[1] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

[2] Florida State Univ, Dept Mech Engn, Tallahassee, FL 32310 USA

[3] Weizmann Inst Sci, Dept Chem Phys, IL-76100 Rehovot, Israel

[4] Charles Univ Prague, Fac Math & Phys, CR-12116 Prague, Czech Republic

[5] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

来源：

JETP LETTERS | 2016年 / 103卷 / 10期

基金：

美国国家科学基金会;

关键词：

LIQUID HELIUM-II; QUANTUM TURBULENCE; MUTUAL FRICTION; HEAT CURRENT; CURRENTS; CHANNEL;

D O I：

10.1134/S0021364016100064

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We summarize recent experiments on thermal counterflow turbulence in superfluid He-4, emphasizing the observation of turbulence in the normal fluid and its effect on the decay process when the heat flux is turned off. We argue that what is observed as turbulence in the normal fluid is a novel form of coupled turbulence in the superfluid and normal components, with injection of energy on the scales of both the (large) channel width and the (small) spacing between quantized vortices. Although an understanding of this coupled turbulence remains challenging, a theory of its decay is developed which accounts for the experimental observations.

引用

页码：648 / 652

页数：5

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