气体辐射宽带关联k模型的修正算法

计算物理 ›› 2002, Vol. 19 ›› Issue (5): 439-442.

气体辐射宽带关联k模型的修正算法

聂宇宏, 陈海耿

东北大学热能工程系, 辽宁沈阳 110004

收稿日期:2001-01-15 修回日期:2001-08-06 出版日期:2002-09-25 发布日期:2002-09-25
作者简介:聂宇宏(1968-),女,河南新安,副教授,博士,从事辐射换热方面的研究.
基金资助:
国家自然科学基金(59974005)资助项目

MODIFICATION OF WIDE BAND CORRELATED-k METHOD FOR RADIATIVE CALCULATION

NIE Yu-hong, CHEN Hai-geng

Thermal Engineering Department, Northeastern University, Shenyang 110004, China

Received:2001-01-15 Revised:2001-08-06 Online:2002-09-25 Published:2002-09-25

摘要/Abstract

摘要： 求解有气体介质参与的辐射换热问题时,气体吸收带的带宽是一个重要的参数,同时它又是计算关联k模型中累积分布函数的参数.通过分析与计算证实,在计算吸收系数累积分布函数时,采用固定的带宽将引入较大误差,为此,将修正的宽带模型中计算带宽的方法引入吸收系数累积分布函数的计算.与窄带累积分布函数的比较表明,修正算法比固定带宽的算法更准确.

关键词: 气体辐射, 关联k模型, 修正算法

Abstract: Bandwidth is an important parameter for gas radiative heat transfer calculation, and a parameter for the calculation of the cumulative distribution function in the correlated-k method. Analysis and calculation show that the constant bandwidth is unreasonable in the calculation of the cumulative distribution function. So bandwidth calculated from the modified wide band model is used in the cumulative distribution function calculation. Comparison with the narrow band correlated-k method shows that the present method is more precise than the traditional one.

Key words: gas radiation, correlated-kmethod, modified calculation

中图分类号:

TK224.1+3 TK112

聂宇宏, 陈海耿. 气体辐射宽带关联k模型的修正算法[J]. 计算物理, 2002, 19(5): 439-442.

NIE Yu-hong, CHEN Hai-geng. MODIFICATION OF WIDE BAND CORRELATED-k METHOD FOR RADIATIVE CALCULATION[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2002, 19(5): 439-442.

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