计算物理 ›› 1999, Vol. 16 ›› Issue (5): 505-510.

• 论文 • 上一篇    下一篇

计算半透明介质层光谱发射特性的一种新方法--伪光源迭加法

黄勇, 夏新林, 谈和平, 余其铮   

  1. 哈尔滨工业大学能源科学与工程学院, 150001
  • 收稿日期:1998-05-15 修回日期:1999-01-25 出版日期:1999-09-25 发布日期:1999-09-25
  • 作者简介:黄勇,男,25,博士生,哈尔滨工业大学456信箱,150001
  • 基金资助:
    国家自然科学基金(59606006)、国家杰出青年基金(59725617)资助项目

A new method for analyzing spectral emissivities of semi-transparent medium layers--pseudo source adding method

Huang Yong, Xia Xinlin, Tan Heping, Yu Qizheng   

  1. School of Energy Science and Engineering, Harbin Institute of Technology, 150001
  • Received:1998-05-15 Revised:1999-01-25 Online:1999-09-25 Published:1999-09-25

摘要: 从介质的内部辐射传递出发,提出一种计算半透明介质层表观光谱发射特性的新方法--伪光源迭加法。文中以两种情况((1)基底面漫射不透明、出射面镜反射半透明;(2)基底面漫射不透明、出射面漫反射半透明)下平行平板状介质层的表观发射为例,介绍了这种方法的基本思想,推导出了表观光谱发射率计算式,具体计算了等温半透明灰介质层在不同条件下的表观半球发射率和方向发射率分布。

关键词: 半透明介质, 表观发射特性, 伪光源迭加法, 蒙特卡罗法

Abstract: According to the internal thermal emission of the medium,a new method,pseudo source adding method,is presented to analyze the apparent emissivities of semi-transparent medium layers.By this method,the apparent emissivity formulae are derived for two different cases,in one of which,the semi-transparent emitting surface is considered to be specularly reflecting,and the diffuse reflection is considered in the other.The substrate surface of the layer is supposed to be diffuse and opaque for the two cases.The comparison with the results by the Monte Carlo method is also given.

Key words: semi-transparent medium, apparent emitting property, pseudo source adding method, Monte Carlo method

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