Journal
IEEE TRANSACTIONS ON MAGNETICS
Volume 42, Issue 4, Pages 631-634Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2006.872008
Keywords
electromagnetic wave propagation; numerical algorithms; time-domain methods
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Different extrapolation strategies are presented for the construction of starting values in implicit Newmark time-stepping schemes used for the solution of the electromagnetic wave equation. The implicit character of this schemes implies the solution of a system of linear equations in each time step. The choice of a good start value derived from the extrapolation of the equation system is shown to improve the convergence of the iterative conjugate gradient solver which reduces the total simulation time.
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