WSGGM结合离散坐标法研究非灰气体辐射换热问题  

Radiative Heat Transfer Analysis of Nongray Gas Using WSGGM and Discrete Ordinates Method

作　　者：聂宇宏[1] 陈海耿[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2001年第4期443-445,共3页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目 ( 5 99740 0 5 )

摘　　要：推导了描述非灰气体辐射特性的灰气体加权和模型 (WSGGM)与离散坐标法结合的公式 ,通过数值模拟以及与段法的比较 ,表明在WSGGM参数相同的情况下 ,所推导的方法与段法的结果相吻合 ,这证明将WSGGM引入离散坐标法能成功地用于模拟非灰气体辐射问题·不同WSGGM参数对计算结果和计算时间都有影响 ,可根据具体场合和精度要求选择使用WSGGM参数·该法容易实现辐射场与流场的耦合求解 ,因此是研究非灰气体辐射换热的一种实用的方法·The formulas with weighted sum of gray gas model (WSGGM) for discrete ordinates method were derived. Radiative transfer in a two dimensional enclosure containing gas mixture was studied using the present formulas. Results show that the present method agrees well with zone method at the same WSGGM parameters. Different WSGGM parameters would contribute effects on the results. The WSGGM parameters can be chosen according to the required precision of a problem. Present method can combine the radiation field with the flux field easily,so it is a useful method for the radiative transfer calculation with a nongray gas media.

关 键 词：非灰气体 热辐射 灰气体加权模型 离散坐标法 数值模拟 辐射换热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]