Modelling toolkit for simulation of magnetic levitation devices
  A stand-alone App has been developed, focused on obtaining information about relevant engineering properties of magnetic levitation systems. Our modelling toolkit provides real time simulations of 2D magneto-mechanical quantities for Superconductor/Permanent Magnet structures. The source code is open and may be customized for a variety of configurations. Ultimately, it relies on the variational statement of the critical state model for the superconducting component and has been verified against experimental data for YBaCuO/NdFeB assemblies.   On a quantitative basis, the values of the arising forces, induced superconducting currents, as well as a plot of the magnetic field lines are displayed upon selection of an arbitrary trajectory of the magnet in the vicinity of the superconductor. The stability issues related to the cooling process, as well as the maximum attainable forces for a given material and geometry are immediately observed.   Mainly, the purpose of this work was to provide a comprehensible data processing tool that may be of help for analyzing the counter-intuitive, but highly relevant, hysteresis effects that occur when the magnet wags around the superconductor. It may be a resource for guiding discussions and physical interpretations in Maglev design (as a complement to the dedicated computer simulation tools). Also, to a large extent, it has a focus on enlightenment, training and dissemination actions. 
J. Pe\~na-Roche and A. Badia-Majos
physics.ed-ph cond-mat.supr-con physics.comp-ph