Method of calculation of the magnetic field in magnetohydrodynamic models of the electric arc

The computing method of self-induced magnetic field in magnetohydrodynamic models of the electric arc, based on the equation for an induction of a magnetic field is proposed. At testing in a two-dimensional case higher computing efficiency of a method in comparison with other known computing methods of an induction under the law of Biot–Savart and through vector potential is shown. The method permits generalization on a three-dimensional case which is more effective than the method of vector potential.