RESEARCH ARTICLE
Nongray radiation from gas and soot mixtures in planar plates based on statistical narrow-band spectral model
1. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China; 2. Institute for Chemical Process and Environmental Technology, National Research Council, Ottawa, Ont, K1A 0R6 Canada
发布日期：
2011-06-05
摘要
The nongray behavior of combustion products plays an important role in various areas of engineering. Based on the statistical narrow-band (SNB) spectral model with an exponential-tailed inverse intensity distribution and the ray-tracing method, a comprehensive investigation of the influence of soot on nongray radiation from mixtures containing H O/N +soot, CO /N +soot, or H O/CO /N +soot was conducted in this paper. In combustion applications, radiation transfer is significantly enhanced by soot due to its spectrally continuous emission. The effect of soot volume fraction up to 1×10 on the source term, the narrow-band radiation intensities along a line-of-sight, and the net wall heat fluxes were investigated for a wide range of temperature. The effect of soot was significant and became increasingly drastic with the increase of soot loading.
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