Abstract
A subspace projection extrapolation (SPE) scheme is introduced for the start vector generation for the iterative solution of the algebraic systems of equations resulting from implicit time integration schemes for electromagnetic discrete field formulations. The SPE scheme yields optimal linear combinations from multiple available start vectors. Spectral components of the exact solution contained therein are optimally resolved which causes subsequently started conjugate gradient (CG) methods to converge according to a reduced effective condition number similar to deflated CG methods. Numerical tests show a significant improvement in numerical efficiency with the SPE scheme in comparison to established extrapolation methods.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
