2024/08/05 by Margarita Baeva, Yann Cressault, Petr Kloc · 1 voice
Physics and Astronomy · Engineering · Mathematics · #Vacuum and Plasma Arcs #Welding Techniques and Residual Stresses #Gas Dynamics and Kinetic Theory
paper · pdf · doi:10.3390/plasma7030033
openalex publication_date 2024/08/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/22
The radiative heat transfer in arc plasma models is considered from the point of view of its description in terms of a net emission coefficient, the method of spherical harmonics in its lowest order, and the discrete ordinate method. Net emission coefficients are computed, applying approximate analytical and numerical approaches and a multi-band representation of the spectral absorption coefficient with three kinds of its averaging and two datasets. Self-consistent access to the radiative heat transfer is applied to a two-dimensional axisymmetric model of a free-burning arc in argon at atmospheric pressure. The results obtained from the models employing the net emission coefficient, the method of spherical harmonics, and the discrete ordinate method are compared.