Research Papers: Combustion and Reactive Flows

WSGG Model Correlations to Compute Nongray Radiation From Carbon Monoxide in Combustion Applications

[+] Author and Article Information
Rogério Brittes

Academic Coordination of Cachoeira do Sul,
Federal University of Santa Maria,
Ernesto Barros Street, 1345,
Cachoeira do Sul 96506-322, RS, Brazil
e-mail: rogerio.silva@ufsm.br

Felipe Roman Centeno, Aline Ziemniczak, Francis. H. R. França

Department of Mechanical Engineering,
Federal University of Rio Grande do Sul,
Sarmento Leite Street, 425,
Porto Alegre 90050-170, RS, Brazil

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received August 19, 2016; final manuscript received November 29, 2016; published online February 1, 2017. Assoc. Editor: Zhixiong Guo.

J. Heat Transfer 139(4), 041202 (Feb 01, 2017) (7 pages) Paper No: HT-16-1526; doi: 10.1115/1.4035394 History: Received August 19, 2016; Revised November 29, 2016

This paper presents correlations for the weighted-sum-of-gray-gases (WSGG) model for carbon monoxide based on HITEMP2010. The correlations are valid for pressure path lengths from 0.0001 atm·m up to 10 atm·m, total pressure in the order of 1.0 atm, and for temperatures ranging from 400 K up to 2500 K. Some test cases embodying nonhomogeneous, nonisothermal conditions are presented, and the results for the WSGG model are compared with the line-by-line (LBL) solutions for CO.

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Fig. 2

Comparison of the total emittances of CO computed from WSGG model and from LBL integration

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Fig. 1

Absorption cross section of CO for T = 1500 K and pa = 0.5 atm, considering different Δηmax. In the figure, the absorption cross sections for Δηmax = 2000 cm−1 and Δηmax = 2400 cm−1 are coincident.

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Fig. 3

Dependence of the total emittance of CO for different values of the partial pressure, keeping a constant value of paL = 0.1 atm·m

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Fig. 5

Solution for case 1: (a) radiative heat flux and (b) radiative heat source

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Fig. 6

Solution for case 2: (a) radiative heat flux and (b) radiative heat source

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Fig. 7

Solution for case 3: (a) radiative heat flux and (b) radiative heat source

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Fig. 4

Temperature and partial pressure profiles: (a) case 1, (b) case 2, and (c) case 3




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