Translations:Release notes 0.21/87/en

From FreeCAD Documentation

Simulation result of the imaginary part of the current density in
a crucible that was heated electrically by a surrounding coil.
This model is available via the FEM Examples.
For more info about this model, see section 16 of the Elmer Tutorials.
The Magnetodynamic 2D equation was added. With this it is possible to perform electromagnetic simulations in 2D.

Pull request #8355