Radiative modelling by the zonal method and WSGG model in inhomogeneous axisymmetric cylindrical enclosure

Eurotherm Conference 105: Computational Thermal Radiation in Participating Media V

物理学;计算机科学

Méchi, Rachid^1 ; Farhat, Habib^1 ; Said, Rachid^1

Lab. Studies of Ionized and Reactive Media, Ibn Eljazzar Street, Monastir

5019, Tunisia^1

关键词: Axisymmetric;    Cylindrical enclosure;    Furnace efficiency;    Nonisothermal;    Numerical procedures;    Radiation calculations;    Turbulent combustion;    Weighted-sum-of-gray-gases;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/676/1/012016/pdf
DOI  :  10.1088/1742-6596/676/1/012016

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Nongray radiation calculations are carried out for a case problem available in the literature. The problem is a non-isothermal and inhomogeneous CO2-H2O- N2gas mixture confined within an axisymmetric cylindrical furnace. The numerical procedure is based on the zonal method associated with the weighted sum of gray gases (WSGG) model. The effect of the wall emissivity on the heat flux losses is discussed. It is shown that this property affects strongly the furnace efficiency and that the most important heat fluxes are those leaving through the circumferential boundary. The numerical procedure adopted in this work is found to be effective and may be relied on to simulate coupled turbulent combustion-radiation in fired furnaces.