A calculational method is presented for the stationary thermal ignition of pulverized coal suspensions based on radiative energy transport in a heat generating medium. A diffusion-limited, Arrhenius model for heat generation is used in the description of the heterogeneous ignition and combustion of particles with the gases in which they are dispersed. The discrete ordinates method, which is used to solve numerically the radiative transfer equation, is combined with an iterative procedure to obtain both the temperature and radiation intensity distributions throughout the reacting system. Numerical examples are presented to show the variation in the critical behavior of a system in plane geometry with wall temperature and reflectivity, optical thickness of the system, particle size, optical parameters, anisotropy of the scattering, and the parameters of the heat generation model.
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Stationary Thermal Ignition of Particle Suspensions
H. Khalil,
H. Khalil
Department of Nuclear Engineering, Kansas State University, Manhattan, Kansas 66506
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J. K. Shultis,
J. K. Shultis
Department of Nuclear Engineering, Kansas State University, Manhattan, Kansas 66506
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T. W. Lester
T. W. Lester
Department of Nuclear Engineering, Kansas State University, Manhattan, Kansas 66506
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H. Khalil
Department of Nuclear Engineering, Kansas State University, Manhattan, Kansas 66506
J. K. Shultis
Department of Nuclear Engineering, Kansas State University, Manhattan, Kansas 66506
T. W. Lester
Department of Nuclear Engineering, Kansas State University, Manhattan, Kansas 66506
J. Heat Transfer. May 1983, 105(2): 288-294 (7 pages)
Published Online: May 1, 1983
Article history
Received:
October 28, 1981
Online:
October 20, 2009
Citation
Khalil, H., Shultis, J. K., and Lester, T. W. (May 1, 1983). "Stationary Thermal Ignition of Particle Suspensions." ASME. J. Heat Transfer. May 1983; 105(2): 288–294. https://doi.org/10.1115/1.3245576
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