石炭MHD燃焼ガスからの放射スペクトルの灰粒子による散乱効果の推定 (<小特集>動力・エネルギ-技術)

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概要

• 論文の詳細を見る

• Light scattering effects by ash polydispersion on spectral emission from coal-fired MHD combustion gas are predicted numerically by means of the first (P_1) and third (P_3) spherical harmonics approximations of a radiative transfer equation in a rectangular cross section of the MHD channel, with consideration of variation in optical properties across a boundary layer, particle diameter distribution of ash polydispersion and wavelength change of ash complex refractive index. Results of P_1 approximation agree well with those of P_3 approximation when optical thickness is greater than about 2. Scattering effects can be neglected for a large optical thickness and a small scattering albedo, but precise calculation is needed when the absorption coefficient of the combustion gas is of the same order of magnitude as the scattering or absorption coefficient of the ash polydispersion.

• 一般社団法人日本機械学会の論文
• 1993-09-25

著者

• 恩田 和夫

  工業技術院電子技術総合研究所

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• く形容器内の非等方性散乱体を含む放射輸送式のP_N近似
• 石炭MHD燃焼ガスからの放射スペクトルの灰粒子による散乱効果の推定 (動力・エネルギ-技術)
• 燃焼ガス中灰粒子の熱放射物性の推定

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