NDLI: Application of an Optimized SLW Model to Calculation of Non-Gray Radiation Heat Transfer in a Furnace

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Darbandi, Masoud Abrar, Bagher Gerry, E. Schneider
Copyright Year	2015
Abstract	The spectral line based weighted sum of gray gases (SLW) model is considered as an advanced model, which can solve the radiative transfer equation (RTE) in non-gray participating media by dividing the absorption cross section spectrum into a limited number of intervals. Each interval is then treated as a gray gas medium, in which the attributed RTE should be solved separately. Therefore, the SLW model would be computationally more efficient than the other non-gray participating media solvers because it is faced with a small number of RTE solutions. In this work, we present a novel optimized SLW model and applied it to radiation heat transfer calculation in a model furnace. The current optimized SLW model with only 3 gray gases can provide accuracy close to the line-by-line (LBL) method. This is while the classic nonoptimized SLW model cannot provide the same level of accuracy imposing only 3 gray gases. Therefore, we strongly recommend the optimized SLW model to calculate the radiation heat transfer in non-gray combustion gas mixtures.
File Format	PDF
ISBN	9780791857502
DOI	10.1115/IMECE2015-53213
Volume Number	Volume 8B: Heat Transfer and Thermal Engineering
Conference Proceedings	ASME 2015 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2015-11-13
Publisher Place	Houston, Texas, USA
Access Restriction	Subscribed
Subject Keyword	Gases Absorption Furnaces Radiation (physics) Combustion gases Heat transfer Radiative heat transfer
Content Type	Text
Resource Type	Article

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