Deviation from the Fourier law in room-temperature heat pulse experiments

Soma Both, Balázs Czél, Tamás Fülöp, Gyula Gróf, Ákos Gyenis, Róbert Kovács, Peter Ván, József Verhás

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

We report heat pulse experiments at room temperature that cannot be described by Fourier's law. The experimental data are modeled properly by the Guyer-Krumhansl equation, in its over-diffusion regime. The phenomenon may be due to conduction channels with differing conductivities and parallel to the direction of the heat flux.

Original languageEnglish
Pages (from-to)41-48
Number of pages8
JournalJournal of Non-Equilibrium Thermodynamics
Volume41
Issue number1
DOIs
Publication statusPublished - Jan 1 2016

Keywords

  • Flash method
  • Guyer-Krumhansl equation
  • heat pulse experiment
  • over-diffusive regime

ASJC Scopus subject areas

  • Chemistry(all)
  • Physics and Astronomy(all)

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