Asynchronous evaluation within parallel environments of coupled finite and boundary element schemes for the simulation of multiphysics problems

Andreas Dedner, Alastair J Radcliffe

Abstract


A complete finite element (FEM) and boundary element (BEM) computational toolbox is presented, based on the Dune and Bem++ software packages respectively, for the efficient independent solution on parallel/multi-threaded multi-core computers of seperate finite and boundary element systems. Each system has very different memory resource requirements, but can be coupled together within a common computer program for solving multi-physics PDE problems for computational sciences and engineering applications.

Examples of both direct (to a fixed-point) and indirect FEM-BEM iterative coupling, and their performance results with increasing core/thread count, drawn from electromagnetic scattering and fluid mechanics are presented as illustration of the wide scope of applications for this package.


Keywords


Finite element methods, boundary element methods, hybrid parallelization

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DOI: https://doi.org/10.11588/ans.2017.1.29042

URN (PDF): http://nbn-resolving.de/urn:nbn:de:bsz:16-ans-290429