Title :
AMG enhanced CN-FDTD method for low frequency electromagnetic applications
Author :
Qiang, Rui ; Chen, Ji
Author_Institution :
Dept. of Electr. & Comput. Eng., Houston Univ., TX, USA
Abstract :
The purpose of this paper is to compare performance of several iterative solvers for Crank-Nicholson-finite-difference time-domain CN-FDTD applications. Our results show that the algebraic multigrid (AMG) can accelerate the solution of the general CN-FDTD method for low-frequency electromagnetic applications. It is observed that this algorithm can be 10 times to 100 times faster than the conventional FDTD method in terms of the CPU time for our examples. It also shows the efficiency of this algorithm increases as the problem size increases.
Keywords :
computational electromagnetics; differential equations; electromagnetic fields; finite difference time-domain analysis; iterative methods; AMG; Crank-Nicholson-finite-difference time-domain applications; algebraic multigrid; enhanced CN-FDTD method; iterative solvers; low frequency electromagnetic applications; performance; Application software; Computational modeling; Finite difference methods; Frequency; Humans; Magnetic heads; Magnetic resonance imaging; Multigrid methods; Poisson equations; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1330474
