Broadband multilevel fast multipole algorithm for large-scale problems with nonuniform discretizations
Ertürk, Vakur B.
Proceedings of the URSI International Symposium on Electromagnetic Theory, EMTS 2016
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We present a broadband implementation of the multilevel fast multipole algorithm (MLFMA) for fast and accurate solutions of multiscale problems involving highly nonuniform discretizations. Incomplete tree structures, which are based on population-based clustering with flexible leaf-level boxes at different levels, are used to handle extremely varying triangulation sizes on the same structures. Superior efficiency and accuracy of the developed implementation, in comparison to the standard and broadband MLFMA solvers employing conventional tree structures, are demonstrated on practical problems.
Multi level fast multipole algorithms (MLFMA)