Heat transfer in infinite harmonic one-dimensional crystals

被引：46
|
作者：
Krivtsov, A. M. [1 ,2 ]
机构：
[1] St Petersburg State Polytech Univ, St Petersburg, Russia
[2] Russian Acad Sci, Inst Problems Mech Engn, St Petersburg 196140, Russia
来源：
DOKLADY PHYSICS | 2015年 / 60卷 / 09期
基金：
俄罗斯科学基金会; 俄罗斯基础研究基金会;
关键词：
Heat Flux; Kinetic Temperature; Hyperbolic Heat Conduction; Initial Temperature Distribution; General Analytical Solution;
D O I：
10.1134/S1028335815090062
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A closed system of differential-difference equations describing thermal processes in one-dimensional harmonic crystals is obtained in the paper. An equation connecting the heat flow and the kinetic temperature is obtained as a solution of the system. The obtained law of heat conduction is different from Fourier's law and results in an equation that combines properties of the standard heat equation and the wave equation. The resulting equation is an analytic consequence from the dynamical equations for the particles in the crystal. Unlike equations of hyperbolic heat conduction, this equation is time-reversible and has only one independent parameter. A general analytical solution of this differential equations is obtained, and the analytical results are confirmed by computer simulations.
引用
收藏
页码：407 / 411
页数：5
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