Abstract
In this paper we compare two hydrodynamic modes in superfluid 3He-4He mixtures, focusing on which mode gives greater contribution to propagation of heat in superfluid liquids. Starting from the two-fluid hydrodynamic model, the quantitative contributions of second sound mode and dissipative thermal conductivity mode to the total heat flow are studied. The problem is considered in a cell with heat source of a form Q 0cos2(ωt) at one side. Analytical expressions for space-time temperature and heat flow dependence are obtained and discussed.
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