eprintid: 5610 rev_number: 27 eprint_status: archive userid: 1 dir: disk0/00/00/56/10 datestamp: 2005-07-04 13:55:14 lastmod: 2012-08-14 15:00:44 status_changed: 2012-08-14 15:00:44 type: preprint metadata_visibility: show creators_name: Sterz, Oliver creators_name: Hauser, Andreas creators_name: Wittum, Gabriel title: Adaptive Local Multigrid Methods for the Solution of Time Harmonic Eddy Current Problems ispublished: pub subjects: ddc-510 divisions: i-708000 keywords: eddy currents , edge elements , local multigrid , adaptivity , red-green refinement cterms_swd: Wirbelstrom cterms_swd: Mehrgitterverfahren cterms_swd: Adaptives Verfahren cterms_swd: Lokale Verfeinerung cterms_swd: Finite-Elemente-Methode abstract: The efficient computation of large eddy current problems with finite elements requires adaptive methods and fast optimal iterative solvers like multigrid methods. This paper provides an overview of the most important implementation aspects of an adaptive multigrid scheme for time-harmonic eddy currents. It is shown how the standard multigrid scheme can be modified to yield an O(N) complexity even for general adaptive refinement strategies, where the number of unknowns N can grow slowly from one to the next refinement level. Algorithmic details and numerical examples are given. abstract_translated_lang: eng class_scheme: msc class_labels: 65N55, 65N30, 78M10 date: 2005 date_type: published id_scheme: DOI id_number: 10.11588/heidok.00005610 portal_cluster_id: p-iwrpp portal_order: 05610 ppn_swb: 1646174682 own_urn: urn:nbn:de:bsz:16-heidok-56105 language: eng bibsort: STERZOLIVEADAPTIVELO2005 full_text_status: public series: IWR-Preprints citation: Sterz, Oliver ; Hauser, Andreas ; Wittum, Gabriel (2005) Adaptive Local Multigrid Methods for the Solution of Time Harmonic Eddy Current Problems. [Preprint] document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/5610/1/preprint.pdf