The iterative thermal emission method: A more implicit modification of IMC

Long, A. R.; Gentile, N. A.; Palmer, T. S.

doi:10.1016/j.jcp.2014.08.017

Title: The iterative thermal emission method: A more implicit modification of IMC

Journal Article · Tue Aug 19 00:00:00 EDT 2014 · Journal of Computational Physics

DOI:https://doi.org/10.1016/j.jcp.2014.08.017· OSTI ID:1239194

Long, A. R. ^[1]; Gentile, N. A. ^[2]; Palmer, T. S. ^[3]

Oregon State Univ., Corvallis, OR (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Oregon State Univ., Corvallis, OR (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

For over 40 years, the Implicit Monte Carlo (IMC) method has been used to solve challenging problems in thermal radiative transfer. These problems typically contain regions that are optically thick and diffusive, as a consequence of the high degree of “pseudo-scattering” introduced to model the absorption and reemission of photons from a tightly-coupled, radiating material. IMC has several well-known features that could be improved: a) it can be prohibitively computationally expensive, b) it introduces statistical noise into the material and radiation temperatures, which may be problematic in multiphysics simulations, and c) under certain conditions, solutions can be nonphysical, in that they violate a maximum principle, where IMC-calculated temperatures can be greater than the maximum temperature used to drive the problem.

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Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1239194

Report Number(s):: LLNL-JRNL-597432

Journal Information:: Journal of Computational Physics, Vol. 277, Issue C; ISSN 0021-9991

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 9 works

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References (12)

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