Effects of either CO2 or H2O and particles on radiation in a one-dimensional cylinder

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 gas and the spectrally continuous absorption/emission behavior of the soot. The absorption coefficient of the nongray gas is modelled 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 P1-approximation, coupled with the integral form of the equation of transfer. The band widths 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)
Title of host publicationAIAA 24th Thermophysics Conference, 1989
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
StatePublished - 1989
EventAIAA 24th Thermophysics Conference, 1989 - Buffalo, United States
Duration: Jun 12 1989Jun 14 1989

Other

OtherAIAA 24th Thermophysics Conference, 1989
CountryUnited States
CityBuffalo
Period6/12/896/14/89

Fingerprint

Radiation
Soot
Gases
Scattering
Delta functions
Wavelength
Radiative transfer
Bandwidth
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Aerospace Engineering

Cite this

Thynell, S. (1989). Effects of either CO2 or H2O and particles on radiation in a one-dimensional cylinder. In AIAA 24th Thermophysics Conference, 1989 [AIAA 89-1718] American Institute of Aeronautics and Astronautics Inc, AIAA.
Thynell, Stefan. / Effects of either CO2 or H2O and particles on radiation in a one-dimensional cylinder. AIAA 24th Thermophysics Conference, 1989. American Institute of Aeronautics and Astronautics Inc, AIAA, 1989.
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Thynell, S 1989, Effects of either CO2 or H2O and particles on radiation in a one-dimensional cylinder. in AIAA 24th Thermophysics Conference, 1989., AIAA 89-1718, American Institute of Aeronautics and Astronautics Inc, AIAA, AIAA 24th Thermophysics Conference, 1989, Buffalo, United States, 6/12/89.

Effects of either CO2 or H2O and particles on radiation in a one-dimensional cylinder. / Thynell, Stefan.

AIAA 24th Thermophysics Conference, 1989. American Institute of Aeronautics and Astronautics Inc, AIAA, 1989. AIAA 89-1718.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - 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 gas and the spectrally continuous absorption/emission behavior of the soot. The absorption coefficient of the nongray gas is modelled 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 P1-approximation, coupled with the integral form of the equation of transfer. The band widths 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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M3 - Conference contribution

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Thynell S. Effects of either CO2 or H2O and particles on radiation in a one-dimensional cylinder. In AIAA 24th Thermophysics Conference, 1989. American Institute of Aeronautics and Astronautics Inc, AIAA. 1989. AIAA 89-1718