Regularized preconditioners for solving non-symmetric generalized saddle point problems. (Chinese. English summary) Zbl 1449.65045
Summary: The regularization technique of a literature was further generalized to solve non-symmetric generalized saddle point problems. The unconditional convergence property of the corresponding iterative method and the spectral properties of the corresponding preconditioned matrix were proved. Based on the preconditioners, a relaxed preconditioning form was proposed and relevant conclusions about the eigenproperties of the preconditioned system were also obtained. The effectiveness of the proposed new preconditioners was illustrated by numerical experiments.
MSC:
65F08 | Preconditioners for iterative methods |
65F10 | Iterative numerical methods for linear systems |