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OPTIMIZATION ISSUES IN FINITE ELEMENT CODES FOR SOLVING OPEN DOMAIN 3D ELECTROMAGNETIC SCATTERING AND CONFORMAL ANTENNA PROBLEMS
Author(s) -
CHATTERJEE A.,
VOLAKIS J. L.,
KEMPEL L. C.
Publication year - 1996
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/(sici)1099-1204(199609)9:5<335::aid-jnm241>3.0.co;2-#
Subject(s) - conformal map , antenna (radio) , finite element method , scattering , element (criminal law) , domain (mathematical analysis) , conformal antenna , computer science , physics , radiation pattern , mathematical analysis , mathematics , optics , coaxial antenna , telecommunications , political science , thermodynamics , law
The first part of the paper presents the implementation and performance of a new absorbing boundary condition (ABC) for truncating finite element meshes. This ABC can be applied conformally to the surface of the structure for scattering and antenna radiation calculations. Consequently, the computational domain is reduced dramatically, thus allowing the simulation of much larger structures, and results are presented for three‐dimensional bodies. The latter part of the paper discusses optimization issues relating to the solver's CPU speed on parallel and vector processors. It is shown that a jagged diagonal storage scheme leads to a four‐fold increase in the FLOP rate of the code, and a standard matrix profile reduction algorithm substantially reduces the inter‐processor communication.