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Two-dimensional radiative transfer. I - Planar geometryDifferential-equation methods for solving the transfer equation in two-dimensional planar geometries are developed. One method, which uses a Hermitian integration formula on ray segments through grid points, proves to be extremely well suited to velocity-dependent problems. An efficient elimination scheme is developed for which the computing time scales linearly with the number of angles and frequencies; problems with large velocity amplitudes can thus be treated accurately. A very accurate and efficient method for performing a formal solution is also presented. A discussion is given of several examples of periodic media and free-standing slabs, both in static cases and with velocity fields. For the free-standing slabs, two-dimensional transport effects are significant near boundaries, but no important effects were found in any of the periodic cases studied.
Document ID
19780044069
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Mihalas, D.
(Colorado Univ. Boulder, CO, United States)
Auer, L. H.
(High Altitude Observatory Boulder, Colo., United States)
Mihalas, B. R.
(Colorado, University Boulder, Colo., United States)
Date Acquired
August 9, 2013
Publication Date
March 15, 1978
Publication Information
Publication: Astrophysical Journal
Subject Category
Thermodynamics And Statistical Physics
Accession Number
78A27978
Funding Number(s)
CONTRACT_GRANT: NGL-06-003-057
Distribution Limits
Public
Copyright
Other

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