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TECHNICAL PAPERS: Radiative Transfer

The Full-Spectrum Correlated-k Distribution for Thermal Radiation From Molecular Gas-Particulate Mixtures

[+] Author and Article Information
Michael F. Modest, Hongmei Zhang

Dept. of Mechanical Engineering, Penn State University, University Park, PA 96802

J. Heat Transfer 124(1), 30-38 (Jun 01, 2001) (9 pages) doi:10.1115/1.1418697 History: Revised June 01, 2001; Received November 28, 2001
Copyright © 2002 by ASME
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Figures

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Geometry of the cylindrical combustor
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Temperature and mole fraction distribution in a two-dimensional cylindrical combustion chamber, (a) temperature distribution; (b) mole fraction distribution of CO2 and H2O; and (c) mole fraction distribution of CH4 (gas mixtures with methane and without methane are both considered).
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Two-dimensional cylindrical combustion chamber with a gas mixture containing CO2 and H2O: (a) LBL calculations for the radiative heat source 𝛁⋅q (W/cm3 ); (b) relative error of FSCK results, (𝛁⋅qLBL−𝛁⋅qFSCK)/𝛁⋅qLBL,max.
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Two-dimensional cylindrical combustion chamber with a gas mixture containing CO2,H2O and CH4: (a) LBL calculations for the radiative heat source 𝛁⋅q (W/cm3 ); (b) relative error of FSCK results, (𝛁⋅qLBL−𝛁⋅qFSCK)/𝛁⋅qLBL,max.
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The weight function a, obtained from k-distributions at different temperatures
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(a) Comparison of k-distributions at different temperatures and the weight function a, (b) Planck function weighted cumulative k-distribution g, and the weight function a
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Local radiative flux in an isothermal N2–CO2 mixture (T=1500 K,p=1 bar,xCO2=0.1,L=1 cm and L=1 m) bounded by cold, black walls
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Radiative flux exiting from the cold column of a two-column CO2-nitrogen mixture at different temperatures (Thot=2000 K,lhot=50 cm;Tcold=300 K,lcold variable; uniform p=1 bar,xCO2=0.1, cold and black walls) using HITEMP and HITRAN96 databases; the relative errors shown are for HITEMP results
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Same as Fig. 4, but for medium bounded by gray walls as well as for gray scattering media

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