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

被引：68

作者：

Both, Soma ^{[1
]}

Czel, Balazs ^{[1
]}

Fulop, Tamas ^{[1
]}

Grof, Gyula ^{[1
]}

Gyenis, Akos ^{[1
]}

Kovacs, Robert ^{[1
,2
]}

Van, Peter ^{[1
,2
]}

Verhas, Jozsef ^{[1
,2
]}

机构：

[1] Budapest Univ Technol & Econ, Dept Energy Engn, Budapest, Hungary

[2] Wigner Res Ctr Phys, Dept Theoret Phys, Budapest, Hungary

来源：

JOURNAL OF NON-EQUILIBRIUM THERMODYNAMICS | 2016年 / 41卷 / 01期

基金：

匈牙利科学研究基金会;

关键词：

Flash method; Guyer-Krumhansl equation; heat pulse experiment; over-diffusive regime; NONHOMOGENEOUS INNER STRUCTURE; SECOND SOUND; ENTROPY CURRENT; CONDUCTION; THERMODYNAMICS; EQUATION; WAVES;

D O I：

10.1515/jnet-2015-0035

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

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.

引用

页码：41 / 48

页数：8

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