GMRES-FFT accelerated magnetoquasistatic calculations using PEEC

The GMRES-FFT algorithm can be used with integral equation methods such as PEEC to achieve great improvements in storage requirements and computation times. These improvements come at the cost of being required to use a regular, rectangular mesh, which may reduce flexibility. In this work, the magnetoquasistatic solution of arbitrary structures embedded within this regular mesh are explored and new preconditioner strategies are presented that assist in accelerating the solution of these arbitrary structures.