Recently, it has become possible to conduct line-by-line (LBL) accurate radiative heat transfer calculations in spectrally highly nongray combustion systems using the Monte Carlo method. LBL accuracy, in principle, adds little to the computational load as compared to gray calculations. However, when employing the Monte Carlo method, the original scheme for choosing appropriate emission wavenumbers for statistical photon bundles is numerically expensive. An improved wavelength selection scheme has been applied to hypersonic plasmas for Monte Carlo solvers. However, directly applying this improved scheme to combustion gases may cause significant errors. In this paper, a hybrid scheme for wavenumber selection is proposed, significantly decreasing CPU requirements compared to previous work. The accuracy of the new method is established and its time requirements are compared against the previous method.
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A Hybrid Wavenumber Selection Scheme for Line-By-Line Photon Monte Carlo Simulations in High-Temperature Gases
Michael F. Modest
Michael F. Modest
1
e-mail: mmodest@eng.ucmerced.edu
Life fellow of ASME
Department of Mechanical Engineering and Applied Mechanics,
Life fellow of ASME
Department of Mechanical Engineering and Applied Mechanics,
University of California
,Merced, Merced, CA 95343
1Corresponding author.
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Tao Ren
e-mail: tren@ucmerced.edu
Michael F. Modest
e-mail: mmodest@eng.ucmerced.edu
Life fellow of ASME
Department of Mechanical Engineering and Applied Mechanics,
Life fellow of ASME
Department of Mechanical Engineering and Applied Mechanics,
University of California
,Merced, Merced, CA 95343
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received August 16, 2012; final manuscript received April 24, 2013; published online July 10, 2013. Assoc. Editor: He-Ping Tan.
J. Heat Transfer. Aug 2013, 135(8): 084501 (4 pages)
Published Online: July 10, 2013
Article history
Received:
August 16, 2012
Revision Received:
April 24, 2013
Citation
Ren, T., and Modest, M. F. (July 10, 2013). "A Hybrid Wavenumber Selection Scheme for Line-By-Line Photon Monte Carlo Simulations in High-Temperature Gases." ASME. J. Heat Transfer. August 2013; 135(8): 084501. https://doi.org/10.1115/1.4024385
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