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

Abstract

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

9 pages, 4 figures

Cited by in corpus (11)

• Guyer-Krumhansl-type heat conduction at room temperature
• Lagging Heat Models in Thermodynamics and Bioheat Transfer: a Critical Review
• Thermodynamical consistency of the Dual Phase Lag heat conduction equation
• Emergence of non-Fourier hierarchies
• Models of ballistic propagation of heat at low temperatures
• Generalized ballistic-conductive heat conduction in isotropic materials
• On the rarefied gas experiments
• Hyperbolicity of the ballistic-conductive model of heat conduction: the reverse side of the coin
• A case study of non-Fourier heat conduction using Internal Variables and GENERIC
• Continuum modeling perspectives of non-Fourier heat conduction in biological systems
• Size effects and beyond-Fourier heat conduction in room-temperature experiments