计算物理 ›› 1997, Vol. 14 ›› Issue (S1): 622-623,621.

• 论文 • 上一篇    下一篇

用改进的射线踪迹法分析含漫射表面的半透明体表观光谱发射特性

夏新林, 余其铮, 谈和平   

  1. 哈尔滨工业大学能源科学与工程学院, 150001
  • 收稿日期:1997-02-20 修回日期:1997-06-02 出版日期:1997-12-25 发布日期:1997-12-25
  • 基金资助:
    本课题得到国家自然科学基金和航天基金的资助

USING IMPROVED RAY TRACING METHOD TO ANALYZE THE APPARENT SPECTRAL EMISSIVITY OF A BODY OF SEMI-TRANSPARENT MEDIUM HAVING SOME DIFFUSE SURFACES

Xia Xinlin, Yu Qizheng, Tan Heping   

  1. School of Energy Science and Engineering, Harbin Institute of Technology, 150001
  • Received:1997-02-20 Revised:1997-06-02 Online:1997-12-25 Published:1997-12-25

摘要: 通过反向应用射线踪迹法并与漫反射表面的有效辐射强度相结合来分析含漫射表面半透明体的表观光谱发射特性。漫反射表面的有效辐射强度通过迭代离散区域的能量平衡方程并结合反向应用射线踪迹法进行求解。将该方法与半透明大平板表观发射率的解析解及圆盘状半透明体表观发射率的蒙特卡洛方法数值解进行了比较,并用该方法对圆盘状半透明体的表观发射进行了分析。

关键词: 半透明体, 表观光谱发射特性, 改进的射线踪迹法

Abstract: Combined with the radiosity intensity of diffusely reflecting surfaces,the improved ray tracing method is reversely employed to analyze the apparent spectral emissivity of a body of semi-transparent medium having some diffuse surfaces.The radiosity intensities of a diffusely reflecting surface are obtainde by iteratively solving the energy balance equations of all discrete zones and using the ray tracing method reversley.The apparent emissivity results obtained by this method are separately compared with the exact solutions of the semi-transparent slabs and the numerical values of disc bodies of semi-transparent medium gained by Monte-Carlo method,and the apparent emissivity of a disc body is investigated.

Key words: body of semi-transparent medium, apparent spectral emissivity, improved ray tracing method

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