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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Coupled radiative, flow and temperature-field analysis of a free-burning arc
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Coupled radiative, flow and temperature-field analysis of a free-burning arc

机译：自由燃烧电弧的辐射，流场和温度场耦合分析

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A computer simulation of a thermal plasma that utilizes a detailed line-by-line radiative analysis coupled to a flow and temperature-field analysis has been written. The radiative transport portion of the model uses the S-N discrete ordinates method and the required spectral radiative properties are calculated from basic atomic data. The flow and temperature-field portion of the calculation is handled using the finite-volume method. The thermal plasma configuration studied using this coupled model is a two-dimensional, axisymmetric, 200 A, 1 cm long, free-burning are located in a one-atmosphere argon environment. Results from this analysis are compared with those from an uncoupled, line-by-line radiative analysis of this same are and from a how and temperature-field analysis that utilizes net emission coefficients to model the radiative source term. As thought, noticeable differences are found between results from the coupled and uncoupled analyses. This work proves that it is feasible to conduct two-dimensional, coupled, line-by-line calculations in a thermal plasma, but the computational times are large. [References: 24]
机译：已经编写了热等离子体的计算机模拟，该模拟利用了逐行的详细辐射分析以及流场和温度场分析。模型的辐射传输部分使用S-N离散纵坐标方法，并且所需的光谱辐射特性是从基本原子数据计算得出的。计算的流场和温度场部分使用有限体积方法处理。使用此耦合模型研究的热等离子体构型是二维的轴对称，200 A，1 cm长的自由燃烧，位于一个大气压的氩气环境中。将此分析的结果与未耦合的逐行辐射分析的结果进行比较，并与利用净发射系数对辐射源项建模的方式和温度场分析进行比较。可以认为，耦合分析和非耦合分析的结果之间存在明显差异。这项工作证明在热等离子体中进行二维，逐行耦合的计算是可行的，但是计算时间很大。 [参考：24]

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