Parallel algorithm for calculating the dynamics of the electron beam current distribution during pulsed heating of a metal target

Speedup and efficiency of two parallel algorithms for calculating the dynamics of the current distribution when the surface of a tungsten sample is heated by an electron beam pulse are presented. The algorithms are implemented using OpenMP technology. A special case of axial symmetry without taking into account electric driving forces is considered. The temperature in the sample, calculated on the basis of the two-phase Stefan problem, is necessary for solving electrodynamic equations. To implement them, the methods of Jacobi and the successive over-relaxation methods were used. Pipelining is used to parallelize the successive over-relaxation algorithm. The current is considered as a possible source of rotation of the substance, which is observed in the experiment. © 2021 Institute of Physics Publishing. All rights reserved

Parallel algorithm for calculating the dynamics of tungsten vapor distribution

We consider an extended dynamic model of tungsten vapor distribution when the surface of a tungsten sample is heated by an electronic beam pulse. The parameters of the model are taken from the experiments on the Beam of Electrons for materials Test Applications (BETA) stand. This stand was designed in the INP SB RAS. The temperature in the sample is calculated from the two-phase Stefan problem. The temperature on the surface of the sample is taken as a boundary condition for the system of gas dynamics equations. A case of axial symmetry is considered. A parallel version of the algorithm, implemented using OpenMP technology, is presented. © 2021 Institute of Physics Publishing. All rights reserved