The work deals with further developments of a study previously initiated, in which a macroscopic model of inhomogeneous superfluid turbulence, based on extended thermodynamics, has been formulated. The model choose as fundamental fields, beside the traditional fields, two extra variables: the averaged vortex line length per unit volume and the heat flux. Using this model the propagation of the fourth sound inside a superleak is investigated: it is shown that, if the configuration of the vortex tangle inside the superleak are not altered -on the average- by the presence of the walls, when the fourth sound is propagated, vibrations in the vortex line density are present, too.

Ardizzone, L., Gaeta, G., Mongiovì MS (2010). Flow of turbulent superfluid helium inside a porous medium. In SIMAI 2010 (pp.359-359). Cagliari.

Flow of turbulent superfluid helium inside a porous medium

ARDIZZONE, Lucia;GAETA, Giuseppa;MONGIOVI', Maria Stella
2010-01-01

Abstract

The work deals with further developments of a study previously initiated, in which a macroscopic model of inhomogeneous superfluid turbulence, based on extended thermodynamics, has been formulated. The model choose as fundamental fields, beside the traditional fields, two extra variables: the averaged vortex line length per unit volume and the heat flux. Using this model the propagation of the fourth sound inside a superleak is investigated: it is shown that, if the configuration of the vortex tangle inside the superleak are not altered -on the average- by the presence of the walls, when the fourth sound is propagated, vibrations in the vortex line density are present, too.
giu-2010
10th CONGRESS of SIMAI - ITALIAN SOCIETY for APPLIED and INDUSTRIAL MATHEMATICS
Cagliari
21-25 giugno 2010
10
2010
1
Ardizzone, L., Gaeta, G., Mongiovì MS (2010). Flow of turbulent superfluid helium inside a porous medium. In SIMAI 2010 (pp.359-359). Cagliari.
Proceedings (atti dei congressi)
Ardizzone, L; Gaeta, G; Mongiovì MS
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/55868
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact