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.
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ASME 2015 International Mechanical Engineering Congress and Exposition
November 13–19, 2015
Houston, Texas, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-5750-2
PROCEEDINGS PAPER
Application of an Optimized SLW Model to Calculation of Non-Gray Radiation Heat Transfer in a Furnace
Masoud Darbandi,
Masoud Darbandi
Sharif University of Technology, Tehran, Iran
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Bagher Abrar,
Bagher Abrar
Sharif University of Technology, Tehran, Iran
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Gerry E. Schneider
Gerry E. Schneider
University of Waterloo, Waterloo, ON, Canada
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Masoud Darbandi
Sharif University of Technology, Tehran, Iran
Bagher Abrar
Sharif University of Technology, Tehran, Iran
Gerry E. Schneider
University of Waterloo, Waterloo, ON, Canada
Paper No:
IMECE2015-53213, V08BT10A037; 7 pages
Published Online:
March 7, 2016
Citation
Darbandi, M, Abrar, B, & Schneider, GE. "Application of an Optimized SLW Model to Calculation of Non-Gray Radiation Heat Transfer in a Furnace." Proceedings of the ASME 2015 International Mechanical Engineering Congress and Exposition. Volume 8B: Heat Transfer and Thermal Engineering. Houston, Texas, USA. November 13–19, 2015. V08BT10A037. ASME. https://doi.org/10.1115/IMECE2015-53213
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