A Monte Carlo technique follows radiation intensity rays through a dispersion of particles. Rays reflect from and are absorbed by the surfaces of the particles that they encounter. Transmitted radiative fluxes are compared with Monte Carlo simulations of a radiative continuum, using properties from both independent and correlated scattering theories. Whereas both discontinuous (surface) and continuous representations of the medium yield similar results for high porosities (low volume fractions), the continuous representation yields transmission overpredictions for porosities less than 0.9, using independent scattering properties, and for porosities less than 0.7, using correlated scattering properties. The overprediction is less severe for less reflective particle surfaces. [S0022-1481(00)01603-0]
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Comparison of Monte Carlo Surface Exchange With Radiative Continuum Results in Large Particle Dispersions
E. Nisipeanu,
E. Nisipeanu
Mechanical Engineering Department, Auburn University, Auburn University, AL 36849-5341
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P. D. Jones
P. D. Jones
Mechanical Engineering Department, Auburn University, Auburn University, AL 36849-5341
Search for other works by this author on:
E. Nisipeanu
Mechanical Engineering Department, Auburn University, Auburn University, AL 36849-5341
P. D. Jones
Mechanical Engineering Department, Auburn University, Auburn University, AL 36849-5341
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division, April 20, 1998; revision received, February 14, 2000. Associate Technical Editor: D. Kaminski.
J. Heat Transfer. Aug 2000, 122(3): 503-508 (6 pages)
Published Online: February 14, 2000
Article history
Received:
April 20, 1998
Revised:
February 14, 2000
Citation
Nisipeanu , E., and Jones, P. D. (February 14, 2000). "Comparison of Monte Carlo Surface Exchange With Radiative Continuum Results in Large Particle Dispersions ." ASME. J. Heat Transfer. August 2000; 122(3): 503–508. https://doi.org/10.1115/1.1287727
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