scholarly journals Atomic Theory of the Two-Fluid Model of Liquid Helium

1954 ◽  
Vol 94 (2) ◽  
pp. 262-277 ◽  
Author(s):  
R. P. Feynman
Keyword(s):  
Liquid Helium ◽  
Fluid Model ◽  
Atomic Theory ◽  
Two Fluid Model ◽  
Two Fluid

Thermodynamics of the Two-Fluid Model of Liquid Helium II

Nature ◽  
1954 ◽  
Vol 174 (4424) ◽  
pp. 322-323 ◽  
Author(s):  
J. W. HERIVEL
Keyword(s):  
Liquid Helium ◽  
Fluid Model ◽  
Helium Ii ◽  
Two Fluid Model ◽  
Two Fluid

The rotation of liquid helium II I. Experiments on the propagation of second sound in uniformly rotating helium II

1956 ◽  
Vol 238 (1213) ◽  
pp. 204-214 ◽  
Keyword(s):  
Liquid Helium ◽  
Fluid Model ◽  
Mutual Friction ◽  
Second Sound ◽  
Order Unity ◽  
Helium Ii ◽  
Axis Of Rotation ◽  
Two Fluid Model ◽  
Two Fluid ◽  
Excess Attenuation

An experimental investigation of the propagation of second sound in uniformly rotating resonators filled with liquid helium II has been made. It is found that in the uniformly rotating liquid the velocity of the second sound is not changed by more than 0·1%, but there is an excess attenuation which is, except near the λ point, proportional to the angular velocity ω , independent of second-sound amplitude, and independent of frequency in the range 1·5 to 4·5 kc/s. These results are described phenomenologically by a mutual friction force B ( ρ s ρ n / ρ ) ω (v s — v n ) per unit volume in the two-fluid model. The constant B is of order unity for second sound propagated at right angles to the axis of rotation; it is smaller by a factor of at least 5 when the second sound is propagated parallel to the axis of rotation. It is suggested that the mutual friction in rotating helium may contain a component perpendicular to (v s — v n ), and that there should be no mutual friction in an irrotational circulation. Experiments to verify these predictions are proposed.

scholarly journals Natural modes of the two-fluid model of two-phase flow

2021 ◽  
Vol 33 (3) ◽  
pp. 033324
Author(s):  
Alejandro Clausse ◽  
Martín López de Bertodano
Keyword(s):  
Two Phase Flow ◽  
Fluid Model ◽  
Phase Flow ◽  
Two Phase ◽  
Natural Modes ◽  
Two Fluid Model ◽  
Two Fluid

Self-consistent hydrodynamic two-fluid model of vortex plasma

2021 ◽  
Vol 33 (3) ◽  
pp. 037116
Author(s):  
Victor L. Mironov
Keyword(s):  
Fluid Model ◽  
Self Consistent ◽  
Two Fluid Model ◽  
Two Fluid
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