A new Full-Spectrum Correlated-k Distribution has been developed, which provides an efficient means for accurate radiative transfer calculations in absorbing/emitting molecular gases. The Full-Spectrum Correlated-k Distribution can be used together with any desired solution method to solve the radiative transfer equation for a small number of spectral absorption coefficients, followed by numerical quadrature. It is shown that the Weighted-Sum-of-Gray-Gases model is effectively only a crude implementation of the Full-Spectrum Correlated-k Distribution approach. Within the limits of the Full-Spectrum Correlated-k Distribution model (i.e., an absorption coefficient obeying the so-called “scaling approximation”), the method is exact. This is demonstrated by comparison with line-by-line calculations for a one-dimensional gas mixture as well as a two-dimensional gas mixture with varying temperature and mole fraction fields.
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The Full-Spectrum Correlated-k Distribution for Thermal Radiation From Molecular Gas-Particulate Mixtures
Michael F. Modest,
e-mail: Fellow ASME mfm6@psu.edu
Michael F. Modest
Dept. of Mechanical Engineering, Penn State University, University Park, PA 96802
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Hongmei Zhang, Mem. ASME
Hongmei Zhang, Mem. ASME
Dept. of Mechanical Engineering, Penn State University, University Park, PA 96802
Search for other works by this author on:
Michael F. Modest
Dept. of Mechanical Engineering, Penn State University, University Park, PA 96802
e-mail: Fellow ASME mfm6@psu.edu
Hongmei Zhang, Mem. ASME
Dept. of Mechanical Engineering, Penn State University, University Park, PA 96802
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division November 28, 2001; revision received June 1, 2001. Associate Editor: J. P. Gore.
J. Heat Transfer. Feb 2002, 124(1): 30-38 (9 pages)
Published Online: June 1, 2001
Article history
Revised:
June 1, 2001
Received:
November 28, 2001
Citation
Modest, M. F., and Zhang, H. (June 1, 2001). "The Full-Spectrum Correlated-k Distribution for Thermal Radiation From Molecular Gas-Particulate Mixtures ." ASME. J. Heat Transfer. February 2002; 124(1): 30–38. https://doi.org/10.1115/1.1418697
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