TY - CONF
T1 - Flow of turbulent superfluid helium inside a porous medium
AU - Mongiovi', Maria Stella
AU - Ardizzone, Lucia
AU - Gaeta, Giuseppa
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - fourth sound
KW - turbulent superfluid
KW - fourth sound
KW - turbulent superfluid
UR - http://hdl.handle.net/10447/55868
M3 - Other
SP - 359
EP - 359
ER -