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A simple idea of finding a domain that encloses an unknown discontinuity embedded in a body is introduced by considering an inverse boundary value problem for the heat equation. The idea gives a design of a special heat flux on the surface…

偏微分方程分析 · 数学 2021-03-09 Masaru Ikehata

This work investigates heat transport in rotating internally heated convection, for a horizontally periodic fluid between parallel plates under no-slip and isothermal boundary conditions. The main results are the proof of bounds on the mean…

流体动力学 · 物理学 2024-12-25 Ali Arslan

In the paper, we investigate the nonlinear thermoelasticity model in two- and three-dimensional convex and bounded domains. We propose new boundary conditions for the displacement. These conditions are not usual in thermoelasticity.…

偏微分方程分析 · 数学 2026-01-09 Piotr Michał Bies

In this work, we study the asymptotic behaviour of solutions to the heat equation in exterior domains, i.e., domains which are the complement of a smooth compact set in $\mathbb{R}^N$. Different homogeneous boundary conditions are…

偏微分方程分析 · 数学 2024-07-18 Joaquín Domínguez-de-Tena , Aníbal Rodríguez-Bernal

We propose a one-dimensional (1D) diffusion equation (heat equation) for systems in which the diffusion constant (thermal diffusivity) varies alternately with a spatial period $a$. We solve the time evolution of the field (temperature)…

介观与纳米尺度物理 · 物理学 2022-04-18 S. Makino , T. Fukui , T. Yoshida , Y. Hatsugai

A numerical study of the transfer across random fractal surfaces shows that their responses are very close to the response of deterministic model geometries with the same fractal dimension. The simulations of several interfaces with…

无序系统与神经网络 · 物理学 2009-10-31 M. Filoche , B. Sapoval

Spider pulsars are binary systems containing an energetic millisecond pulsar that intensely irradiates a closely orbiting low-mass companion. Modelling their companion's optical light curves is essential to the study of the orbital…

高能天体物理现象 · 物理学 2020-11-17 G. Voisin , M. R. Kennedy , R. P. Breton , C. J. Clark , D. Mata-Sánchez

The heat transfer model for a one-dimensional supercooled melt during the final stage of solidification is considered. The Stefan problem for the determination of the temperature distribution is solved under the condition that (i) the…

材料科学 · 物理学 2012-08-27 G. L. Buchbinder , V. A. Volkov

The onset of frictional motion at the interface between two distinct bodies in contact is characterized by the propagation of dynamic rupture fronts. We combine friction experiments and numerical simulations to study the properties of these…

地球物理 · 物理学 2020-02-03 Ilya Svetlizky , Gabriele Albertini , Gil Cohen , David S. Kammer , Jay Fineberg

The first half of this work gives a survey of the fractional Laplacian (and related operators), its restricted Dirichlet realization on a bounded domain, and its nonhomogeneous local boundary conditions, as treated by pseudodifferential…

偏微分方程分析 · 数学 2018-03-05 Gerd Grubb

Using the nonequilibrium Green's function formalism, we propose a general microscopic framework to investigate the radiative heat transfer (RHT) between coplanar objects with a square lattice. We employ the obtained formulas to…

介观与纳米尺度物理 · 物理学 2024-06-28 Tao Zhu , Yong-Mei Zhang , Jian-Sheng Wang

We study the electronic thermal conductivity $\kappa_\textrm{el}$ and the thermal diffusion constant $D_\textrm{Q,el}$ in the square lattice Hubbard model using the finite-temperature Lanczos method. We exploit the Nernst-Einstein relation…

强关联电子 · 物理学 2022-12-28 Martin Ulaga , Jernej Mravlje , Peter Prelovšek , Jure Kokalj

This work investigates the two-dimensional thermal behavior of a bilayer medium subject to both internal and external heat sources. The model incorporates diffusion, advection, and temperature-dependent volumetric heat generation or…

流体动力学 · 物理学 2025-11-12 Guillermo Federico Umbricht , Diana Rubio , Domingo Alberto Tarzia

We use the well-posedness of transmission problems on classes of two-sided Sobolev extension domains to give variational definitions for (boundary) layer potential operators and Neumann-Poincar{\'e} operators. These classes of domains…

偏微分方程分析 · 数学 2026-02-10 Gabriel Claret , Michael Hinz , Anna Rozanova-Pierrat , Alexander Teplyaev

We study heat transfer mediated by near-field fluctuations of the electromagnetic field. In case of metals the latter are dominated by Coulomb interactions between thermal fluctuations of electronic density. We show that an elastic…

介观与纳米尺度物理 · 物理学 2018-11-27 Alex Kamenev

The study of heat transport in low-dimensional oscillator lattices presents a formidable challenge. Theoretical efforts have been made trying to reveal the underlying mechanism of diversified heat transport behaviors. In lack of a unified…

统计力学 · 物理学 2016-05-05 Lei Wang , Nianbei Li , Peter Hanggi

We calculate electronic energy transport in inhomogeneous superconductors using a fully self-consistent non-equilibrium quasiclassical Keldysh approach. We develop a general theory and apply it a superconductor with an order parameter that…

超导电性 · 物理学 2016-08-10 Caroline Richard , Anton B. Vorontsov

We develop a self-consistent theoretical formalism to model the dynamics of heat transfer in dissipative, dispersive, anisotropic nanoscale media, such as metamaterials. We employ our envelope dyadic Green's function method to solve…

经典物理 · 物理学 2024-11-19 Hodjat Mariji , Stanislav Maslovski

The non-contact heat transfer between two bodies is more efficient than the Stefan-Boltzmann law, when the distances are on the nanometer scale (shorter than Wien's wavelength), due to contributions of thermally excited near fields. This is…

介观与纳米尺度物理 · 物理学 2021-08-06 Carsten Henkel , Paul Philip Schmidt

There has been much interest in semiconductor superlattices because of showing very low thermal conductivities. This makes them especially suitable for applications in a variety of devices for thermoelectric generation of energy, heat…

统计力学 · 物理学 2020-02-06 Federico Vázquez , Péter Ván , Róbert Kovács