| 灰介电薄膜传热研究 |
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| 引用本文： | 饶荣水,蔡九菊. 灰介电薄膜传热研究[J]. 材料与冶金学报, 2001, 0(4) |
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| 作者姓名： | 饶荣水 蔡九菊 |
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| 作者单位： | 东北大学材料与冶金学院(饶荣水)，东北大学材料与冶金学院(蔡九菊) |
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| 摘 要： | 用Boltzmann传输方程建立灰介电薄膜声子辐射传热方程,提出灰体介电薄膜的当量导热系数的概念,指出Fourier定律只适用于声学极厚区域,给出了用Fourier定律进行热流密度计算的误差.
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| 关 键 词： | 灰介电薄膜 声子辐射传热 当量导热系数 |
Analysis of Heat Transfer in Gray Dielectric Thin Film |
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| Rao Rongshui,Cai Jiuju. Analysis of Heat Transfer in Gray Dielectric Thin Film[J]. Journal of Materials and Metallurgy, 2001, 0(4) |
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| Authors: | Rao Rongshui Cai Jiuju |
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| Abstract: | The equation of phonon radiative transfer (EPRT) is deduced based on the Boltzmann transport equation (BTE). The concept of effective conductivity of gray dielectric thin film is introduced. It is pointed out that the Fourier law is valid only in the acoustic thick regions. The error of the heat flux predicted by the Fourier law is presented. |
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| Keywords: | gray dielectric thin film phonon radiative transfer effective thermal conductivity. |
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