Title :
Coupling electromagnetics with micromagnetics
Author :
Chang, Ruinan ; Lomakin, Vitaliy ; Michielssen, Eric
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of California, San Diego, La Jolla, CA, USA
Abstract :
A time domain simulator for analyzing non-linear coupled electromagnetic and micromagnetic phenomena in complex magnetic structures is introduced. The simulator employs a new integral formulation that accurately accounts for the Eddy currents and captures the dominant physics. An implicit time stepping scheme that uses an analytic Jacobian method and allows for large time steps is proposed. Finally, the simulator has a low (O(N logN)) computational complexity for a system with N mesh elements and it is implemented on massively parallel GPU computing systems, which permits for the rapid analysis of highly complex magnetic devices.
Keywords :
Jacobian matrices; computational complexity; eddy currents; electromagnetic wave propagation; graphics processing units; magnetic materials; micromagnetics; parallel processing; time-domain analysis; analytic Jacobian method; complex magnetic structures; computational complexity; dominant physics; eddy currents; highly complex magnetic devices; implicit time stepping scheme; mesh elements; micromagnetic phenomena; nonlinear coupled electromagnetic phenomena; parallel GPU computing systems; time domain simulator; Couplings; Eddy currents; Equations; Magnetic domains; Magnetization; Magnetostatics; Mathematical model;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6349026
