Radiation due to CO2 or H2O and particles in cylindrical media

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This study considers nongray, absorbing, emitting, anisotropically scattering, one-dimensional, radiative transfer in cylindrical media. The radiation transfer is due to a gas composed of either CO2 or H2O, soot and particles. The temperature of these constituents is equal and uniform throughout the medium. The nongray effects are due to the spectrally discontinuous absorption/emission behavior of the gas and the spectrally continuous absorption/emission behavior of the soot. The absorption coefficient of the nongray gas is modeled according to Edwards' exponential wide-band models. The absorption coefficient of the soot is inversely proportional to wavelength. The scattering phase function of the gray particles is represented as the sum of an isotropic component and a delta-function. An accurate solution to this problem is obtained by using the Pi-approximation coupled with the integral form of the equation of transfer. The bandwidths are determined by utilizing the wide-band models, and the spectral integration is performed over all wavelengths according to a two-point quadrature for each band. Comprehensive parameter surveys are performed in order to establish a detailed understanding of the complex interaction between radiatively participating particles and molecular gases.

Original languageEnglish (US)
Pages (from-to)436-445
Number of pages10
JournalJournal of thermophysics and heat transfer
Volume4
Issue number4
DOIs
StatePublished - Jan 1 1990

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soot
nongray gas
absorptivity
radiation
gases
broadband
delta function
molecular gases
scattering
quadratures
wavelengths
radiative transfer
bandwidth
approximation
interactions
temperature

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

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title = "Radiation due to CO2 or H2O and particles in cylindrical media",
abstract = "This study considers nongray, absorbing, emitting, anisotropically scattering, one-dimensional, radiative transfer in cylindrical media. The radiation transfer is due to a gas composed of either CO2 or H2O, soot and particles. The temperature of these constituents is equal and uniform throughout the medium. The nongray effects are due to the spectrally discontinuous absorption/emission behavior of the gas and the spectrally continuous absorption/emission behavior of the soot. The absorption coefficient of the nongray gas is modeled according to Edwards' exponential wide-band models. The absorption coefficient of the soot is inversely proportional to wavelength. The scattering phase function of the gray particles is represented as the sum of an isotropic component and a delta-function. An accurate solution to this problem is obtained by using the Pi-approximation coupled with the integral form of the equation of transfer. The bandwidths are determined by utilizing the wide-band models, and the spectral integration is performed over all wavelengths according to a two-point quadrature for each band. Comprehensive parameter surveys are performed in order to establish a detailed understanding of the complex interaction between radiatively participating particles and molecular gases.",
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Radiation due to CO2 or H2O and particles in cylindrical media. / Thynell, Stefan.

In: Journal of thermophysics and heat transfer, Vol. 4, No. 4, 01.01.1990, p. 436-445.

Research output: Contribution to journalArticle

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