Instability on the Free Surface of Superfluid He-II Induced by a Steady Heat Flow in Bulk

被引：8

作者：

Remizov, I. A. ^{[1
]}

Levchenko, A. A. ^{[1
]}

Mezhov-Deglin, L. P. ^{[1
]}

机构：

[1] Russian Acad Sci Chernogolovka, Inst Solid State Phys, 2 Academician Ossipyan Str, Chernogolovka 142432, Russia

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 2016年 / 185卷 / 3-4期

基金：

俄罗斯科学基金会;

关键词：

Superfluid helium; Heat flow; Counterflow of normal and superfluid components; Surface elevations; Kelvin-Helmholtz instability on a free surface; KELVIN-HELMHOLTZ INSTABILITY; 2ND SOUND; LIQUID-HYDROGEN; HELIUM; TRANSITION; WAVES;

D O I：

10.1007/s10909-016-1638-1

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report observations of the onset of irregular motion on a free surface of superfluid He-II induced by a quasi-stationary heat flow in a rectangular container. The container open from the top is mounted inside an optical cell partly filled with superfluid He-II. Three holes in the container walls provide free circulation of the normal and superfluid components inside and outside the container. The results of measurements are discussed in terms of the Korshunov theory (Eurphys Lett 16:673, 1991; JETP Lett 75:423, 2002) of the Kelvin-Helmholtz instability on an initially flat He-II surface induced by a relative motion of superfluid and normal components of the liquid along the surface when the counterflow velocity exceeds the threshold value. The experimental data are qualitatively consistent with the theoretical predictions (Korshunov in JETP Lett 75:423, 2002) taking into account the finite viscosity of He-II.

引用

页码：324 / 338

页数：15

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