With today's computational capabilities, it has become possible to conduct line-by-line (LBL) accurate radiative heat transfer calculations in spectrally highly nongray combustion systems using the Monte Carlo method. In these calculations, wavenumbers carried by photon bundles must be determined in a statistically meaningful way. The wavenumbers for the emitting photons are found from a database, which tabulates wavenumber–random number relations for each species. In order to cover most conditions found in industrial practices, a database tabulating these relations for CO2, H2O, CO, CH4, C2H4, and soot is constructed to determine emission wavenumbers and absorption coefficients for mixtures at temperatures up to 3000 K and total pressures up to 80 bar. The accuracy of the database is tested by reconstructing absorption coefficient spectra from the tabulated database. One-dimensional test cases are used to validate the database against analytical LBL solutions. Sample calculations are also conducted for a luminous flame and a gas turbine combustion burner. The database is available from the author's website upon request.
Line-by-Line Random-Number Database for Monte Carlo Simulations of Radiation in Combustion System
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received July 23, 2018; final manuscript received September 21, 2018; published online November 22, 2018. Editor: Portonovo S. Ayyaswamy.
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Ren, T., and Modest, M. F. (November 22, 2018). "Line-by-Line Random-Number Database for Monte Carlo Simulations of Radiation in Combustion System." ASME. J. Heat Transfer. February 2019; 141(2): 022701. https://doi.org/10.1115/1.4041803
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