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本文概述了区域分析法和Monte-Carlo法两种辐射传热数学模型所需的输入数据。采纳Field等人建立的煤粉燃烧模型,数学上用一阶非线性常微分方程组描述,本文给出了方程的数值解法。炭粒和灰粒吸收系数用“投影理论”计算。本文完成了计算的各个细节,独立地编排出FORTRAN计算程序,进行了实例计算,算出煤粉燃烧放热及介质吸收系数的三维空间分布。定量地分析了各参数灵敏度,为制订今后的试验研究方案提供了依据。本程序已和Monte-Carlo程序结合计算,对20万千瓦电站锅炉炉膛温度场及热流场作出预报。
This article summarizes the input data required for the two radiative heat transfer mathematical models, the regional analysis method and the Monte-Carlo method. Adopting the model of coal combustion established by Field et al., It is mathematically described by first-order nonlinear ordinary differential equations. In this paper, the numerical solution of the equation is given. Absorption coefficient of carbon particles and soot using “projection theory” calculation. In this paper, the details of the calculation are completed. The FORTRAN calculation program is compiled independently, and the calculation of the example is carried out. The three-dimensional spatial distribution of the coal combustion exotherm and the absorption coefficient of the medium is calculated. Quantitative analysis of the sensitivity of each parameter provides the basis for the formulation of future experimental research programs. This procedure has been combined with the Monte-Carlo program to calculate the temperature field and the heat flow field of a 200 MW power station boiler.