Deviation from the Fourier law in room-temperature heat pulse experiments
Soma BothDepartment of Energy Engineering, Budapest University of Technology and Economics, Budapest, HungaryBalázs CzélDepartment of Energy Engineering, Budapest University of Technology and Economics, Budapest, HungaryTamás FülöpDepartment of Energy Engineering, Budapest University of Technology and Economics, Budapest, HungaryGyula GrófDepartment of Energy Engineering, Budapest University of Technology and Economics, Budapest, HungaryÁkos GyenisDepartment of Energy Engineering, Budapest University of Technology and Economics, Budapest, HungaryRóbert KovácsDepartment of Energy Engineering, Budapest University of Technology and Economics, Budapest; and Department of Theoretical Physics, Wigner Research Centre for Physics, Budapest, HungaryPeter VánDepartment of Theoretical Physics, Wigner Research Centre for Physics, Budapest; and Department of Energy Engineering, Budapest University of Technology and Economics, Budapest, HungaryJózsef VerhásDepartment of Energy Engineering, Budapest University of Technology and Economics, Budapest; and Department of Theoretical Physics, Wigner Research Centre for Physics, Budapest, Hungary
2015en
ABI
Аннотация
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.
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