Nonlinear multiphysics and multiscale modeling of dynamic ferromagnetic-thermal problems

Su Yan, Joseph D. Kotulski, Jian Ming Jin

Research output: Contribution to journalArticlepeer-review


A coupled ferromagnetic-thermal solver is developed for the multiphysics and multiscale modeling and simulation of nonlinear magnetic materials in the time domain. By adopting a temperature-dependent dynamic hysteresis model, the power loss is characterized and calculated from the solution of Maxwell's equations, which serves as the heat source for the thermal problem. By solving the thermal problem, the temperature change is obtained, and its effect on the magnetic material property can be quantified, which is then coupled back to Maxwell's equations. Due to different temporal characteristics of the electromagnetic fields and the thermal response, the resulting coupled ferromagnetic-thermal system has two significantly different time scales. Such a temporal multiscale issue is addressed with a proposed multiscale time integration method to account for the multiscale coupling between the two physics. With the proposed multiphysics and multiscale modeling method, both the electromagnetic fields and the thermal responses can be captured accurately in a dynamic operation.

Original languageEnglish (US)
Article number105107
JournalJournal of Applied Physics
Issue number10
StatePublished - Mar 14 2018

ASJC Scopus subject areas

  • General Physics and Astronomy


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