This paper presents a original method for open magnetic cores modelling. It is
called the distributed point source method. It is based on a spatial distribution of point
sources located on the core surfaces emitting the magnetic flux, called the active surfaces.
Compared to Finite Elements methods, the DSPM method requires only the meshing of these
active surfaces, which considerably reduces the solving process time. In this paper, the
DSPM method is applied on a magnetic cylindrical core, placed in free space.