What is it about?
1. We propose a fully three-dimensional edge-finite-element algorithm for simulating CSEM surveys. 2. We compare the performance between direct and iterative solvers. 3. The results show the superior efficiency of direct solvers, particularly for multisource problems.
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Why is it important?
It is often assumed that iterative solvers are lighter and more efficient than direct solvers. However, when the coefficient matrix of the governing equation has a poor condition number, as in CSEM, a direct solver can be the better choice. This is especially true given the continuous improvements in computing hardware and sparse matrix computation software.
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This page is a summary of: Three-dimensional modelling of controlled-source electromagnetic surveys using an edge finite-element method with a direct solver, Geophysical Prospecting, June 2014, Wiley,
DOI: 10.1111/1365-2478.12132.
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