Numerical modelling of unsteady heating and melting of the anode by electric arc. Part 1. Mathematical model and computed characteristics of the arc column
R.M. Urusov, F.R. Sultanova, T.E. Urusova
Institute of Physical-Technical Problems and Materials Science of the National Academy of Sciences of Kyrgyz Republic
urusov_rus@mail.ru
Keywords: electric arc, numerical modelling, two-dimensional unsteady mathematical model, conjugate heat exchange with the treated product
Pages: 643-660
Abstract
The two-dimensional mathematical model in the approximation of a partial local thermodynamic equilibrium of plasma and the technique for numerical computation of the unsteady electric arc characteristics, including the conjugate heat exchange of the electric-arc plasma flow with the treated product (anode) are considered. The results of overall testing of the numerical algorithm point to the correctness of the model and computational technique. The results of the computation of the arc characteristics from the conventional ignition moment until the passage to stationary regime are presented. It is found that a single thermal torus, which scatters fairly quickly in the ambient medium, forms around the arc column.
|
