Reflection boundary conditions for random walk models of dispersion in non-gaussian turbulence

Several methods of treating boundaries in random walk models of dispersion in flows with skew velocity distributions are considered. It is shown that only one of these methods is completely consistent with the requirement that the model should support a steady state distribution of particles which i...

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Bibliographic Details
Published in:Atmospheric environment (1994) 1994, Vol.28 (12), p.1981-1987
Main Authors: Thomson, D.J., Montgomery, M.R.
Format: Article
Language:English
Subjects:
Earth, ocean, space
Exact sciences and technology
External geophysics
Geophysics. Techniques, methods, instrumentation and models
Mathematical models
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Summary:Several methods of treating boundaries in random walk models of dispersion in flows with skew velocity distributions are considered. It is shown that only one of these methods is completely consistent with the requirement that the model should support a steady state distribution of particles which is uniform in space. This is illustrated with numerical simulations.
ISSN:1352-2310
1873-2844
DOI:10.1016/1352-2310(94)90467-7