Decay of Counterflow Quantum Turbulence in Superfluid 4He

被引：6
|
作者：
Mineda, Y. [1 ]
Tsubota, M. [1 ,2 ]
Vinen, W. F. [3 ]
机构：
[1] Osaka City Univ, Dept Phys, Sumiyoshi Ku, Osaka 5588585, Japan
[2] Osaka City Univ, OCU Adv Res Inst Nat Sci & Technol OCARINA, Sumiyoshi Ku, Osaka 5588585, Japan
[3] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England
来源：
JOURNAL OF LOW TEMPERATURE PHYSICS | 2013年 / 171卷 / 5-6期
关键词：
He-4; Quantized vortices; Thermal counterflow; Decay turbulence; LIQUID HELIUM-II; 3-DIMENSIONAL VORTEX DYNAMICS; MUTUAL FRICTION; HEAT CURRENT;
D O I：
10.1007/s10909-012-0800-7
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have simulated the decay of thermal counterflow quantum turbulence from a statistically steady state at T=1.9 K, with the assumption that the normal fluid is at rest during the decay. The results are consistent with the predictions of the Vinen equation (in essence the vortex line density decays as t (-1)). For the statistically steady state, we determine the parameter c (2), which connects the curvature of the vortex lines and the mean separation of vortices. A formula connecting the parameter chi (2) of the Vinen equation with c (2) is shown to agree with the results of the simulations. Disagreement with experiment is discussed briefly.
引用
收藏
页码：511 / 518
页数：8
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