Transient eddy currents in a semi-infinite solid
QuickField simulation example
This is an example of the transient eddy currents simulation, performed with QuickField software. The surface of semi-infinite solid plate is suddenly subjected to a constant magnetic potential A0.
Plane-parallel problem of transient magnetics.
Magnetic permeability of material μ=1;
Conductivity of material g=2.5 MS/m;
Loading A0 = 2 Wb/m.
Determine current distribution within the conductor.
The model length 20 m is arbitrarily selected such that no significant potential change occurs at the end points for the time period of interest. The final time of 0.25 s is sufficient for the theoretical response comparison. A time step of 0.005 s is used.
Flux density distribution in a semi-infinite solid body:
Graph of flux density distribution in a semi-infinite solid body:
Time t = 0.15 s
Vector Potential A, Wb/m
Flux Density B, T
Eddy Current Density j, A/mm²