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An improved separability approximation for line radiative transport in nonhomogeneous media.A simple modification to the constant half-width approximation of Wilson and Greif, which is an extension of the well-known Curtis-Godson method to the treatment of temperature variations along the integration path, is introduced which permits a more accurate evaluation of line radiative transport in nonhomogeneous gases. To demonstrate the method's accuracy, comparisons are made with Wilson and Greif and numerical frequency integrated results for the line equivalent width and radiative flux in a planar slab with prescribed Planck function and line half-width spatial variations. These variations are chosen to represent typical shock layer conditions. It is found that the modified procedure reduces the inaccuracies inherent in Wilson and Greif's approximation by factors ranging from 5 to 10, while retaining the latter method's ease of application.
Document ID
19730047589
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Boughner, R. E.
(NASA Langley Research Center Space Systems Div., Hampton, Va., United States)
Date Acquired
August 7, 2013
Publication Date
June 1, 1973
Publication Information
Publication: Journal of Quantitative Spectroscopy and Radiative Transfer
Volume: 13
Subject Category
Thermodynamics And Combustion
Accession Number
73A32391
Distribution Limits
Public
Copyright
Other

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