# Phase transition and lambda-line in liquid helium

Maria Stella Mongiovi', Mauro Fabrizio

Risultato della ricerca: Articlepeer review

5 Citazioni (Scopus)

## Abstract

A hydrodynamical model describing the superfluid phase transition of 4He close to $\lambda$-line is presented. In the work, which generalizes a phase field model of lambda transition previously formulated by thesame authors, the independent fields are the density, the temperature, the velocity, the heat flux and a scalar function $f$, linked to the modulus of the wave-function $\psi$, solutionof the Ginzburg-Landau equation. In this framework, the heat fluxis given by a modified Maxwell-Cattaneo equation. The restrictionson the constitutive quantities are obtained from the entropyprinciple, using the Liu method of Lagrange multipliers. A maximumtheorem is proved that allows the model satisfy the second law ofthermodynamics.
Lingua originale English 185-200 16 Journal of Non-Equilibrium Thermodynamics 38 Published - 2013

## All Science Journal Classification (ASJC) codes

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• ???subjectarea.asjc.3100.3100???

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