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The clearing up of a wave nature of the energy and mass transfer phenomena in classical expressions of the molecular-kinetic theory has allowed to find a quantitative measure of intensity of processes of a thermal conductivity, viscosity…

流体动力学 · 物理学 2007-05-23 S. L. Arsenjev , I. B. Lozovitski , Y. P. Sirik

We present an experimental study on steady gravity currents advancing along a heated wall. The current is generated by a mixture of air and carbon dioxide continuously supplied at the channel inlet. To have a complete point-wise…

流体动力学 · 物理学 2026-01-21 Stefano Lanzini , Massimo Marro , Mathieu Creyssels , Alexandre Azouzi , Pietro Salizzoni

We investigate Gevrey order and 1-summability properties of the formal solution of a general heat equation in two variables. In particular, we give necessary and sufficient conditions for the 1-summability of the solution in a given…

动力系统 · 数学 2010-06-15 Werner Balser , Michèle Loday-Richaud

The Green-Kubo theory of thermal transport has long be considered incompatible with modern simulation methods based on electronic-structure theory, because it is based on such concepts as energy density and current, which are ill-defined at…

统计力学 · 物理学 2018-08-20 Stefano Baroni , Riccardo Bertossa , Loris Ercole , Federico Grasselli , Aris Marcolongo

We develop a theory of heat transfer induced by thermal charge fluctuations in two-dimensional electron double layers. We consider pristine systems comprised of identical layers, and focus on the regime of sufficiently high temperatures and…

介观与纳米尺度物理 · 物理学 2023-08-21 Dmitry Zverevich , A. V. Andreev , Alex Levchenko

The possibility that the type of discontinuous flow changes as the conditions gradually (continuously) change is investigated in connection with the problems arising when the results of numerical simulations of magnetic reconnection in…

等离子体物理 · 物理学 2013-12-13 L. S. Ledentsov , B. V. Somov

In this paper, we discuss the total variation bound for the solution of scalar conservation laws with discontinuous flux. We prove the smoothing effect of the equation forcing the $BV_{loc}$ solution near the interface for $L^\infty$…

偏微分方程分析 · 数学 2016-03-07 Shyam Sundar Ghoshal

A linear irreversible thermodynamic framework of heat conduction in rigid conductors is introduced. The deviation from local equilibrium is characterized by a single internal variable and a current intensity factor. A general constitutive…

统计力学 · 物理学 2014-04-08 P. Ván , T. Fülöp

A peculiarity of the hydrodynamic Navier-Stokes equations for a granular gas is the modification of the Fourier law, with the presence of an additional contribution to the heat flux that is proportional to the density gradient.…

统计力学 · 物理学 2015-06-11 J. Javier Brey , M. J. Ruiz-Montero

In this paper, a thermal-dynamical consistent model for mass transfer across permeable moving interfaces is proposed by using the energy variation method. We consider a restricted diffusion problem where the flux across the interface…

数值分析 · 数学 2022-06-15 Yuzhe Qin , Huaxiong Huang , Yi Zhu , Chun Liu , Shixin Xu

We present a unified description of heat flow in two-terminal hybrid quantum systems. Using simple models, we analytically study nonlinear aspects of heat transfer between various reservoirs: metals, solids, and spin baths, mediated by the…

介观与纳米尺度物理 · 物理学 2015-05-13 Lian-Ao Wu , Claire X. Yu , Dvira Segal

We propose the concept of global temperature for spatially non-uniform heat conduction systems. With this novel quantity, we present an extended framework of thermodynamics for the whole system such that the fundamental relation of…

统计力学 · 物理学 2019-10-23 Naoko Nakagawa , Shin-ichi Sasa

This work is aimed at the study and analysis of the heat transport on a metal bar of length $L$ with a solid-solid interface. The process is assumed to be developed along one direction, across two homogeneous and isotropic materials.…

偏微分方程分析 · 数学 2021-10-28 Diana Rubio , Domingo A. Tarzia , Guillermo F. Umbricht

A thermodynamically consistent model of non-classical coupled non-linear thermoelasticity capable of accounting for thermal wave propagation is proposed. The heat flux is assumed to consist of both additive energetic and dissipative…

统计力学 · 物理学 2015-07-20 Mebratu F. Wakeni , B. D. Reddy , A. T. McBride

In this paper, we derive a Sobolev inequality along an extended Ricci flow and prove a point-wise Guassian type bound for the fundamental solutions of the conjugate heat equation under the flow.

微分几何 · 数学 2017-04-12 Xian-Gao Liu , Kui Wang

We present a theory which describes the transport properties of the interfacial region with respect to heat and mass transfer. Postulating the local Gibbs relation for a continuous description inside the interfacial region, we derive the…

软凝聚态物质 · 物理学 2015-05-19 Kirill Glavatskiy , Dick Bedeaux

In this work, we investigate the heat exchange between two quantum systems whose initial equilibrium states are described by the generalized Gibbs ensemble. First, we generalize the fluctuation relations for heat exchange discovered by…

量子物理 · 物理学 2018-09-13 Bo-Bo Wei

The full MHD problem of the flow and heat transfer due to a linearly stretching sheet in the presence of a transverse magnetic field is put in a self-similar form. Traditionally ignored physical processes such as induced magnetic field,…

流体动力学 · 物理学 2018-03-28 Tarek M. A. El-Mistikawy

The kinetic theory of dilute gases to first order in the gradients yields linear relations between forces and fluxes. The heat flux for the relativistic gas has been shown to be related not only to the temperature gradient but also to the…

广义相对论与量子宇宙学 · 物理学 2011-07-21 A. L. Garcia-Perciante , A. R. Mendez

Evaporative mass flux is governed by interfacial state of liquid and vapor phases. For closely similar pressures and mass fluxes of liquid water into its own vapor, discontinuity between interfacial liquid and vapor temperatures in the…

化学物理 · 物理学 2019-09-19 Parham Jafari , Amit Amritkar , Hadi Ghasemi