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    Efficient parallel solutions to 3D electromagnetic problems using potentials

    Access Status
    Fulltext not available
    Authors
    Puzyrev, Vladimir
    De La Puente, J.
    Cela, J.
    Date
    2013
    Type
    Conference Paper
    
    Metadata
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    Citation
    Puzyrev, V. and De La Puente, J. and Cela, J. 2013. Efficient parallel solutions to 3D electromagnetic problems using potentials, in SEG Technical Program Expanded Abstracts 2013, pp. 663-668. Society of Exploration Geophysicists.
    Source Title
    SEG Technical Program Expanded Abstracts
    DOI
    10.1190/segam2013-1028.1
    ISSN
    1052-3812
    School
    Department of Applied Geology
    URI
    http://hdl.handle.net/20.500.11937/53390
    Collection
    • Curtin Research Publications
    Abstract

    We present a massively parallel finite-element method for 3D electromagnetic forward modelling using vector and scalar potentials. The numerical scheme employs parallel Krylov subspace solvers with efficient preconditioning and hence displays good performance in terms of convergence and scalability for large parallel applications. The method supports completely unstructured tetrahedral meshes and electric anisotropy. A realistic synthetic test case demonstrates the necessity of accurate representation of bathymetry and complex subsurface structures. Another focus of this study is to investigate the performance of different approximate inverse-based preconditioners, which are well suited for parallel implementation, but can lack efficiency when applied without regard for specific matrix properties.

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