Hierarchical bases preconditioner to enhance convergence of the CFIE with multiscale meshes

Autor: Righero, Marco, Bulai, Iulia Martina, Francavilla, Matteo Alessandro, Vipiana, Francesca, Bercigli, Mirko, Mori, Alessandro, Bandinelli, Mauro, Vecchi, Giuseppe
Rok vydání: 2015
Předmět:
Druh dokumentu: Working Paper
DOI: 10.1109/LAWP.2016.2542878
Popis: A hierarchical quasi-Helmholtz decomposition, originally developed to address the low-frequency and dense-discretization breakdowns for the EFIE, is applied together with an algebraic preconditioner to improve the convergence of the CFIE in multiscale problems. The effectiveness of the proposed method is studied first on some simple examples; next, test on real-life cases up to several hundreds wavelengths show its good performance.
Databáze: arXiv