参与介质的散射特性对辐射热交换的影响  

Influence of Scattering Properties of Sharing Media on Radiant Thermal Exchange

作　　者：马金凤[1] 陈海耿[1] 吴彬[1] 任鸿斌[2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004 [2]辽宁电力勘测设计院,辽宁沈阳110005

出　　处：《东北大学学报（自然科学版）》2008年第6期861-864,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(2006CB601203)

摘　　要：考虑参与介质的散射作用,给出一维辐射直接交换面积解析式和辐射全交换面积矩阵表达式,模拟计算了含有散射介质的一维系统辐射热交换问题.数值模拟结果表明,与忽略介质散射作用的简化描述相比,容积段-容积段的辐射全交换面积增大,表面段-容积段的辐射全交换面积降低,介质的散射削弱了容积段与表面段之间的辐射热交换.参与介质的散射作用越强,忽略介质散射导致的计算误差越大.The 1-D analytic formulae of direct radiant exchange areas and matrix expressions of total radiant exchange area are given taking account of the scattering effects of sharing media to calculate simulatively the radiant exchange areas in an 1-D system having sharing media. In comparison to the description neglecting the scattering effects of media, the numerical simulation results showed that the total radiant exchange area between gas and surface zones decreases due to the weakened scattering effect of media, while that between gas zones increases. The stronger the scattering effect of sharing media, the greater the calculation error resulting from neglecting their scattering properties.

关 键 词：辐射热交换 散射 辐射直接交换面积 辐射全交换面积 数值模拟 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TK224.12[动力工程及工程热物理—热能工程]