Newton-Krylov-FETI-DP with Adaptive Coarse Spaces

摘要

An adaptive Newton-Krylov-FETI-DP approach has been presented, where the condition numbers of all preconditioned tangential matrices are bounded by a constant. Additionally, heuristic strategies have been introduced saving local work by reducing the number of eigenvalue problems. Results for a p-Laplace model problem with highly heterogeneous coefficient have been presented, showing the ability of adaptive coarse spaces to save CG iterations.