非灰气体离散坐标法模型的比较  

Comparison of various quadrature sets for discrete coordinates method used in model of nongray gaseous radiation

作　　者：罗侠[1] 聂宇宏[1] 张卫军[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《材料与冶金学报》2003年第2期145-148,共4页Journal of Materials and Metallurgy

基　　金：国家自然科学基金资助项目(59974005).

摘　　要：将求解气体辐射传递方程的离散坐标法与描述非灰气体辐射特性的灰气体加权和模型结合,来研究气体介质参与的辐射换热问题.不同的坐标离散方法———SN法、TN法、SRAPN法与灰气体加权和模型结合,得到不同的非灰气体离散坐标法.分别用非灰气体的SN法、TN法、SRAPN法对一个三维炉况进行模拟,得到炉膛内介质的温度分布及壁面热流分布,比较了不同非灰气体离散坐标法的计算时间和精度.结果表明,SN法和TN法与灰气体加权和模型结合能较好地模拟气体介质参与的辐射换热问题.Discrete coordinates method is coupled with weighted sun of gray gases model to simulate the nongray radiative heat transfer. Various nongray discrete coordinates methods, such as WSGGMSN, WSGGMTN, and WSGGMSRAPN, are obtained with several quadrature sets incorporated into weighted sum of gray gases model. The WSGGMSN, WSGGMTN, and WSGGMSRAPN are used to simulate the distributions of temperatures in media and heat fluxes on walls of a three dimensional furnace. A comparison of computational time and precision for various models is made. The results obtained show that the WSGGMSN and WSGGMTN can be used in the simulation of radiative heat transfer with nongray media.

关 键 词：非灰气体辐射 灰气体加权和模型 离散坐标法 辐射换热 数值方法 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TB115[动力工程及工程热物理—热能工程]