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电弧温度场一般很难采用接触式测量或用理论计算的办法而求得,特别是在非局域热力学平衡的情况下,一般须量测谱强度和谱线宽度才能间接求得温度值,本文提供了新的计算方法,只须量测谱线(H_β)强度,然后求解一个方程组计算求得电弧的气体温度场、电子温度场和其它等离子体参数,从而可节省大量的试验工作量,文中还采用气体能量方程和电流密度积分式检验计算结果,良好的一致性表明了此新方法的正确和可靠性。最后,指出了此法可用于传热反问题而求得类氢气体及其混物的高温导热系数。
The arc temperature field is generally difficult to obtain by contact measurement or theoretical calculation. Especially in the case of non-local thermodynamic equilibrium, it is generally necessary to obtain the temperature value indirectly by measuring the spectral intensity and spectral width. It provides a new calculation method, which only saves a great deal of experimental work by measuring the intensity of the line (H_β) and then solving a set of equations to calculate the gas temperature field, the electron temperature field and other plasma parameters of the arc. In the paper, the gas energy equation and current density integral test are also used to calculate the result. Good agreement indicates the correctness and reliability of this new method. Finally, it is pointed out that this method can be used to obtain the high-temperature thermal conductivity of hydrogen-like gases and their mixtures by inverse problem of heat transfer.