The radiation element method by ray emission method, has been formulated to predict radiative heat transfer in three-dimensional arbitrary participating media with nongray and anisotropically scattering properties surrounded by opaque surfaces. To validate the method, benchmark comparisons were conducted against the existing several radiation methods in a rectangular three-dimensional media composed of a gas mixture of carbon dioxide and nitrogen and suspended carbon particles. Good agreements between the present method and the Monte Carlo method were found with several particle density variations, in which participating media of optical thin, medium, and thick were included. As a numerical example, the present method is applied to predict radiative heat transfer in a boiler model with nonisothermal combustion gas and carbon particles and diffuse surface wall. Elsasser narrow-band model as well as exponential wide-band model is adopted to consider the spectral character of and gases. The distributions of heat flux and heat flux divergence in the boiler furnace are obtained. The difference of results between narrow-band and wide-band models is discussed. The effects of gas model, particle density, and anisotropic scattering are scrutinized.
Prediction of Radiative Heat Transfer in Industrial Equipment Using the Radiation Element Method
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division, November 6, 2000; revised manuscript received May 23, 2001. Associate Editor: Y. W. Kwon.
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Guo, Z., and Maruyama, S. (May 23, 2001). "Prediction of Radiative Heat Transfer in Industrial Equipment Using the Radiation Element Method ." ASME. J. Pressure Vessel Technol. November 2001; 123(4): 530–536. https://doi.org/10.1115/1.1388235
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