Title :
Investigating three methods for improving the performance of the SIM algorithm
Author :
Nitch, D.C. ; Fourie, A.P.C.
Author_Institution :
Dept. of Electr. Eng., Univ. of the Witwatersrand, Johannesburg, South Africa
Abstract :
A sparse iterative method for solving electromagnetic problems has been implemented in an object-oriented version of NEC. The SIM is based on the generation of a sparse matrix which is factored and subsequently used in an iterative solution of a matrix equation. The paper investigates three methods of filling the sparse matrix. The three methods are compared by investigating the effect they have on the density of the sparse matrix and the number of iterations required to converge to a solution. It also reports on the use of an extrapolation technique in order to reduce the iteration count in the solution of the matrix equation.<>
Keywords :
electromagnetism; extrapolation; iterative methods; sparse matrices; NEC; SIM algorithm; electromagnetic problems solution; extrapolation; matrix equation solution; object-oriented method; sparse iterative method; sparse matrix; Africa; Boundary conditions; Equations; Extrapolation; Filling; Iterative algorithms; Iterative methods; National electric code; Sparse matrices; Transmission line matrix methods;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1994. AP-S. Digest
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-2009-3
DOI :
10.1109/APS.1994.407883
