Print Email Facebook Twitter Improving multigrid for 3-D electro-magnetic diffusion on stretched grids Part of: ECCOMAS CFD 2006: Proceedings of the European Conference on Computational Fluid Dynamics· list the conference papers Title Improving multigrid for 3-D electro-magnetic diffusion on stretched grids Author Jönsthövel, T.B. Oosterlee, C.W. Mulder, W.A. Date 2006-09-05 Abstract We evaluated multigrid techniques for 3D diffusive electromagnetism. The Maxwell equations and Ohm's law were discretised on stretched grids, with stretching in all coordinate directions. We compared standard multigrid to alternative multigrid approaches with linewise smoothing and semi-coarsening, both as a stand-alone solver and as a preconditioner. Although the number of iterations was small for some variants, none of the schemes showed grid-independent convergence rates on stretched grids. Subject electro-magneticsdiffusionmultigridcontrolled-source EM To reference this document use: http://resolver.tudelft.nl/uuid:632b503b-149a-47c1-a6b2-2f98f8703b48 Part of collection Conference proceedings Document type conference paper Rights (c) 2006 Jönsthövel, T.B.; Oosterlee, C.W.; Mulder, W.A. Files PDF Jonsthovel.pdf 969.67 KB Close viewer /islandora/object/uuid:632b503b-149a-47c1-a6b2-2f98f8703b48/datastream/OBJ/view