Solid conductor regions
Introduction
Solid conductor regions in Flux allow representing every type of magnetic cores: bulk
(e.g., ferrites, sintered or pressed iron powders) or laminated (e.g., stacks of
electrical steel sheets). These regions enable obtaining results with enhanced
accuracy, but they require increased computational resources. In fact:
- when modelling bulk cores, both B(H) and J(E) characteristics in the material definition are used during the Finite Elements solving process, thus enabling - if combined with a Jiles-Atherton or a Preisach model for B(H) in a Transient Magnetic solution - to account for static and dynamic hysteresis and then getting iron losses (as well as hysteresis losses) by à priori approach;
- when modelling stacks of electrical steel sheets, feasible in 3D only, these solid conductor regions also require a geometrical description of each individual sheet in the stack.
How to create it in a Flux project
In Flux 2D and in Flux Skew, the solid conductor region is a face region, while in Flux 3D it becomes a volume region. These regions are available in Transient and in Steady State AC Magnetic applications, while they are not in Magneto Static.
This region may be created as follows:
- while creating a new region, select Solid Conductor Region in the drop-down menu Type of region;
- then, provide a material for the region;
- finally, inform how the region is connected to an external source in the Circuit Coupling drop-down menu. Amongst the three available possibilities, select No circuit: open circuit conductor since to represent magnetic cores the region is completely disconnected from any external circuit, i.e., no imposed currents, induced eddy currents only.