Flow Phenomena in Liquid Helium II

@article{Allen1938FlowPI,
  title={Flow Phenomena in Liquid Helium II},
  author={J. F. Allen and A. D. Misener},
  journal={Nature},
  year={1938},
  volume={142},
  pages={643-644}
}
RECENT measurements on the flow of liquid helium II through capillaries have yielded very varied results. We reported earlier1 that the flow through long capillaries bore no relation to a normal laminar or turbulent condition of the liquid, and that the velocity depended only slightly on the pressure head. 
THE FLOW AND VISCOSITY OF LIQUID HELIUM
Experiments on the flow of liquid helium through glass capillaries ranging in diameter from 0.025 cm. to 0.0036 cm., and with lengths varying from 2 cm. to 26 cm. were carried out. Normal laminar f...
Surface Transport in Liquid Helium II
IN our previous communications1 on the ‘transfer’ of liquid helium II by a surface film above the liquid level, we stressed the similarity of this ‘transfer’ with the so-called transport phenomena inExpand
Chapter III Transport Phenomena of Liquid Helium II in Slits and Capillaries
Publisher Summary This chapter discusses the transport phenomena of liquid helium II in slits and capillaries. The bulk flow through slits and capillaries under the influence of pressure andExpand
Thermal conditions in sound waves
Summary The question whether ultrasonic waves in He II are adiabatic or isothermal is discussed. Though the high conductivity of heat and the high frequency would suggest an isothermal behaviour, theExpand
The thermomechanical effects in liquid helium II
Abstract We investigated the fountain effect, the heat conductivity and the flow of liquid helium II with slits of a width below 1 μ. Below a certain width of the slit the fountain effect reaches aExpand
Wave Kinetic Description of Superfluidity
We propose a wave kinetic description of superfluidity in Bose Einstein condensates. This is based on the traditional two-fluid model, where in contrast with current analysis, the two fluids areExpand
Thermomechanical coupling and second sound in superfluid flows
Abstract The present paper is concerned with the modelling of the influence of the thermomechanical coupling on the propagation of temperature waves (second sound) in superfluids. For an adequateExpand
Second sound and the superfluid fraction in a Fermi gas with resonant interactions
TLDR
The measurements allow us to extract the temperature dependence of the superfluid fraction, a previously inaccessible quantity that will provide a benchmark for theories of strongly interacting quantum gases. Expand
The Study of Optoacoustic First and Second Sound Waves in Superfluid Helium under the Effect of Gaussian Laser Light Considering Electrostriction Mechanism
The present paper is aimed to study the effect of Gaussian laser light on first and second sound waves in superfluid helium theoretically using optoacoustic method. The mechanism applied in thisExpand
A torsional oscillator study of solid helium
A compound two-mode torsional oscillator is used to investigate the ‘supersolid’ signature in polycrystaline He. We observe a change in the resonant period of both torsion modes below 200 mK,Expand
...
1
2
3
4
5
...

References

SHOWING 1-5 OF 5 REFERENCES
Viscosity of Liquid Helium II
IN recent experiments on the flow of liquid helium II through very small openings, carried out by Allen and Misener1, and by Kapitza2, an upper limit to the viscosity was placed at 10−9 C.G.S. units,Expand
Flow of Liquid Helium II
A SURVEY of the various properties of liquid helium II has prompted us to investigate its viscosity more carefully. One of us1 had previously deduced an upper limit of 10−5 C.G.S. units for theExpand
Viscosity of Liquid Helium below the λ-Point
THE abnormally high heat conductivity of helium II below the λ-point, as first observed by Keesom, suggested to me the possibility of an explanation in terms of convection currents. This explanationExpand
Transfer of Helium II on Glass
KAMERLINGH ONNES1 observed in 1922 that the surfaces of two volumes of liquid helium II, that is, helium below the λ point, in two concentric vessels adjusted themselves automatically to the sameExpand