Magnetothermal Coupling with preCICE for Multiphysical Simulations of Electric Machines
Please login to view abstract download link
The coupling library preCICE is well known for its applications in fluid-structure interaction. It can link several software packages, enables different coupling schemes and provides various features such as independent time stepping for the subsystems or Waveform Relaxation for more strongly coupled systems. This rather general approach allows for a wide variety of multiphysical problems to be solved. This work explores the possibilities to couple different physical aspects which are involved when simulating electric machines. A magnetic field problem is coupled to an electric network. The losses are the source for a heat conduction problem whose resulting temperature distribution influences the magnetic problem via the electric conductivity. This yields a two-way coupled system with multirate behavior. Therefore, Waveform Relaxation is a favorable method that allows for independent time stepping schemes. The coupling library preCICE and its time interpolation features are used to solve the coupled systems with several tools, including an in-house Matlab solver and the C++ library openCFS.