We propose a theoretical model to study heat transfer at the nanoscale by means of high-order thermodynamic fluxes. The model is fully compatible with the model of heat transfer of extended irreversible thermodynamics, represents a generalization of the Guyer-Krumhansl proposal (Guyer & Krumhansl 1966 Phys. Rev. 148) and is able to deal with relaxational and non-local effects. It also accounts for the role played by the different heat carriers (electrons and/or lattice vibrations) and captures different heat-carrier temperatures. The proposed model is hyperbolic and is used to investigate the propagation of thermal waves.
High-order fluxes in heat transfer with phonons and electrons: Application to wave propagation
Carlomagno I.
Writing – Original Draft Preparation
;Di Domenico M.Writing – Original Draft Preparation
;Sellitto A.Writing – Original Draft Preparation
2021-01-01
Abstract
We propose a theoretical model to study heat transfer at the nanoscale by means of high-order thermodynamic fluxes. The model is fully compatible with the model of heat transfer of extended irreversible thermodynamics, represents a generalization of the Guyer-Krumhansl proposal (Guyer & Krumhansl 1966 Phys. Rev. 148) and is able to deal with relaxational and non-local effects. It also accounts for the role played by the different heat carriers (electrons and/or lattice vibrations) and captures different heat-carrier temperatures. The proposed model is hyperbolic and is used to investigate the propagation of thermal waves.File in questo prodotto:
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