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  • 标题:Planck Mean Absorption Coefficients of H2O, CO2, CO and NO for radiation numerical modeling in combusting flows
  • 本地全文:下载
  • 作者:Maciej Chmielewski ; Marian Gieras
  • 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
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