Multiple solution of linear algebraic systems by iterative methods in the analysis of modal filters

The paper investigates the dependence existing between the time of a multiple calculation of a capacitive matrix for new protective devices — modal filters, by the method of moments. The influence of order (direct or reverse) in which its geometric parameter is changed with frozen and seed preconditioners is considered. For computer-aided design of a modal filter we are considered the multiple solution of linear algebraic systems with dense matrix and several right-hand sides by BiCGStab, Block BiCGStab and Seed BiCGStab iterative methods. For calculations Matlab and TALGAT systems are used. The preferability of using the Block BiCGStab method and the seed preconditioner for analyses of modal filters are shown.