Non-equilibrium thermodynamics analysis of rotating counterflow superfluid turbulence

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3 Citazioni (Scopus)

Abstract

In two previous papers, two evolution equations for the vortex line density L, proposed by Vinen, were generalized to rotating superfluid turbulence and compared with each other. Here, the already generalized alternative Vinen equation is extended to the case in which counterflow and rotation are not collinear. Then, the obtained equation is considered from the viewpoint of non-equilibrium thermodynamics. According to this formalism, the compatibility between the evolution equation for L and the one for the velocity of the superfluid component is studied. The compatibility condition requires the presence of a new term dependent on the anisotropy of the tangle, which indicates how the friction force depends on the rotation rate.
Lingua originaleEnglish
pagine (da-a)91-99
Numero di pagine9
RivistaMathematical and Computer Modelling
Volume2010-01
Stato di pubblicazionePublished - 2010

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Non-equilibrium Thermodynamics
Evolution Equation
Rotating
Thermodynamics
Tangles
Superfluid
Compatibility Conditions
Collinear
Anisotropy
Vortex
Turbulence
Friction
Vortex flow
Dependent
Line
Alternatives
Term

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Modelling and Simulation

Cita questo

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title = "Non-equilibrium thermodynamics analysis of rotating counterflow superfluid turbulence",
abstract = "In two previous papers, two evolution equations for the vortex line density L, proposed by Vinen, were generalized to rotating superfluid turbulence and compared with each other. Here, the already generalized alternative Vinen equation is extended to the case in which counterflow and rotation are not collinear. Then, the obtained equation is considered from the viewpoint of non-equilibrium thermodynamics. According to this formalism, the compatibility between the evolution equation for L and the one for the velocity of the superfluid component is studied. The compatibility condition requires the presence of a new term dependent on the anisotropy of the tangle, which indicates how the friction force depends on the rotation rate.",
author = "Michele Sciacca",
year = "2010",
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journal = "Mathematical and Computer Modelling",
issn = "0895-7177",
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AB - In two previous papers, two evolution equations for the vortex line density L, proposed by Vinen, were generalized to rotating superfluid turbulence and compared with each other. Here, the already generalized alternative Vinen equation is extended to the case in which counterflow and rotation are not collinear. Then, the obtained equation is considered from the viewpoint of non-equilibrium thermodynamics. According to this formalism, the compatibility between the evolution equation for L and the one for the velocity of the superfluid component is studied. The compatibility condition requires the presence of a new term dependent on the anisotropy of the tangle, which indicates how the friction force depends on the rotation rate.

UR - http://hdl.handle.net/10447/40518

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VL - 2010-01

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EP - 99

JO - Mathematical and Computer Modelling

JF - Mathematical and Computer Modelling

SN - 0895-7177

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