Dynamical Analysis of Non-Fourier Heat Conduction and Its Application in Nanosystems
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Beschreibung
This thesis studies the general heat conduction law, irreversible thermodynamics and the size effect of thermal conductivity exhibited in nanosystems from the perspective of recently developed thermomass theory. The derivation bridges the microscopic phonon Boltzmann equation and macroscopic continuum mechanics. Key concepts such as entropy production, temperature and the Onsager reciprocal relation are revisited in the case of non-Fourier heat conduction. Lastly, useful expressions are extracted from the picture of phonon gas dynamics and are used to successfully predict effective thermal conductivity in nanosystems.
This thesis studies the general heat conduction law, irreversible thermodynamics and the size effect of thermal conductivity exhibited in nanosystems from the perspective of recently developed thermomass theory. The derivation bridges the microscopic phonon Boltzmann equation and macroscopic continuum mechanics. Key concepts such as entropy production, temperature and the Onsager reciprocal relation are revisited in the case of non-Fourier heat conduction. Lastly, useful expressions are extracted from the picture of phonon gas dynamics and are used to successfully predict effective thermal conductivity in nanosystems.
Nominated as Outstanding PhD thesis by Tsinghua University, China Derives the general heat conduction law from both the phonon Boltzmann equation and continuum mechanics Proposes novel derivations from the macroscopic perspective for general entropy production, non-equilibrium temperature and Onsager Reciprocal Relations Obtains explicit expressions for the size-dependent effective thermal conductivity of nanosystems Includes supplementary material: sn.pub/extras
Autor*in
Yuan Dong
Themen in »Dynamical Analysis of Non-Fourier Heat Conduction and Its Application in Nanosystems«
Effective Thermal Conductivity of Nanosystems Heat Conduction in Nanosystems Irreversible Thermodynamics Non-Fourier Heat Conduction Non-equilibrium Temperature Onsager Reciprocal Relation Phonon Boltzmann Equation Thermal Conductivity of Nanosystems Thermomass Theory