Preconditioned Gmres for Solving Nonsymmetric Full Matrix Equation

摘要

The Preconditioned Generalized Minimal Residual (P-GMRES) algorithm for sloving the nonsymmetric indefinite full matrix equation is introduced in this paper. A example is analyzed by using the Surface Charge Simualtion Method (SSM) and the P-GMRES solver is compared with the Gauss elimination method. It is found that the calculation time of P-GMRES for solving the large size matrix equation is several times less than the direct solution method. The accuracy and the stability of the method are also quite good.