期刊名称：Bulletin of the Institute of Heat Engineering
印刷版ISSN：2083-4187
出版年度：2015
卷号：95
期号：2
页码：97-104
语种：English
出版社：Warsaw University of Technology
摘要：TheWeighted-Sum-of-Gray-Gases Model (WSGGM), based on temperature dependent weighting factors, is an ecient method of determining the absorption coecients in numerical modeling of combusting flows. Weighting factors are obtained by polynomial fitting of experimental data for only two reagents (H2O and CO2) to the analytical equation for emissivity. In this article the use of Planck Mean Absorption Coecients (PMAC) for H2O, CO2, CO and NO in combustion numerical modeling is proposed. The aim of the PMAC approach is to improve the initial solution of temperature and species mass fraction profiles in numerical modeling of non-premixed methane combustion. The proposed model is verified against the results of turbulent, non-premixed methane combustion experimental data. The implemented PMAC model represents the flue gas composition and temperature more accurately than the WSGGM.
关键词：radiation modeling;combustion;absorption coeficient;weighted sum of gray gases
