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Edge-based electric field formulation in 3D CSEM simulations: A parallel approach
Castillo-Reyes, Octavio; de la Puente, Josep; Puzyrev, Vladimir; Cela, José M.
Barcelona Supercomputing Center
This paper presents a parallel computing scheme for the data computation that arise when applying one of the most popular electromagnetic methods in exploration geophysics, namely, controlled-source electromagnetic (CSEM). The computational approach is based on linear edge finite element method in 3D isotropic domains. The total electromagnetic field is decomposed into primary and secondary electromagnetic field. The primary field is calculated analytically using an horizontal layered-earth model and the secondary field is discretized by linear edge finite element method. We pre-calculated the primary field through of an embarrassingly-parallel framework in order to exploit the parallelism and the advantages of geometric flexibility. The numerical-computational formulation presented here is able to work with three different orientations for the dipole or excitation source. Our code is implemented on unstructured tetrahedral meshes because are able to represent complex geological structures and they allow local refinement in order to improve the solution’s accuracy. The code’s performance is studied through a test of scalability.
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 644202. Authors gratefully acknowledge the support from the Mexican National Council for Science and Technology (CONACYT).
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria electrònica
High performance computing
Electromagnetic energy
Electromagnetic--methods
Geophysical instruments
High Performance Computing
Exploration geophysics
Edge-based finite element
Controlled-source Electromagnetic Method
Supercomputadors
Ones electromagnètiques
Simulació, Mètodes de
info:eu-repo/semantics/submittedVersion
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IEEE
         

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