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引入了6波段P-1辐射模型,对三维空气电弧等离子体进行了仿真分析.其特点是不仅考虑了热辐射的发射问题,同时考虑了等离子体内热辐射的自吸收问题.通过计算获得了空气电弧等离子体温度和辐射能量的分布并进行了相应的分析.与净辐射系数方法相比较,P-1模型获得的温度分布较宽,其弧柱电压值更接近于实验测量值.研究表明,6波段P-1辐射模型能够更精确地求解空气电弧等离子体的辐射问题.
A 6-band P-1 radiation model is introduced to simulate the 3D air arc plasma, which not only considers the emission of thermal radiation but also takes into account the self-absorption of thermal radiation in the plasma. Arc plasma temperature and radiant energy distribution and the corresponding analysis.Compared with the net emissivity method, the P-1 model obtained a wide temperature distribution and its arc column voltage value is closer to the experimental measurement value.Research shows that, The 6-band P-1 radiation model can solve the radiation problem of air arc plasma more accurately.