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Coaxial radiative and convective heat transfer in gray and nongray gasesCoupled radiative and convective heat transfer is investigated for an absorbing gas flowing in a finite length channel and heated by blackbody radiation directed along the flow axis. The problem is formulated in one dimension and numerical solutions are obtained for the temperature profile of the gas and for the radiation escaping the channel entrance, assuming both gray and nongray absorption spectra. Due to radiation trapping, the flowing gas is found to have substantially smaller radiation losses for a given peak gas temperature than a solid surface that is radiatively heated to this temperature. A greenhouse effect is also evident whereby radiation losses are minimized for a gas having stronger absorption at long wavelengths.
Document ID
19800067210
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mattick, A. T.
(Washington, University Seattle, Wash., United States)
Date Acquired
August 10, 2013
Publication Date
October 1, 1980
Publication Information
Publication: Journal of Quantitative Spectroscopy and Radiative Transfer
Volume: 24
Subject Category
Atomic And Molecular Physics
Accession Number
80A51380
Funding Number(s)
CONTRACT_GRANT: NGL-49-002-044
Distribution Limits
Public
Copyright
Other

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