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The phase-integral method for radiative transfer problems with highly-peaked phase functionsComplete solutions to the radiative transfer equation, including both azimuth and depth dependence, are provided by the discrete-ordinate method of Chandrasekhar, but these solutions are often limited because of large computer requirements. This paper presents a 'phase-integral' method which greatly reduces the number of discrete ordinates needed in the solution for highly peaked phase functions. A composite quadrature method is shown to be effective in further reducing the number of discrete ordinates required for highly anisotropic phase functions. Examples are given to indicate convergence requirements and expected accuracy in the complete solution for Henyey-Greenstein and cloud-type phase functions.
Document ID
19790034531
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Fricke, C. L.
(NASA Langley Research Center Hampton, Va., United States)
Date Acquired
August 9, 2013
Publication Date
November 1, 1978
Publication Information
Publication: Journal of Quantitative Spectroscopy and Radiative Transfer
Volume: 20
Subject Category
Thermodynamics And Statistical Physics
Accession Number
79A18544
Distribution Limits
Public
Copyright
Other

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