NDLI: A finite element-boundary integral method for scattering and radiation by two- and three-dimensional structures

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A finite element-boundary integral method for scattering and radiation by two- and three-dimensional structures

Content Provider	NASA Technical Reports Server (NTRS)
Author	Collins, Jeffery D. Jin, Jian-Ming Volakis, John L.
Copyright Year	1991
Description	A review of a hybrid finite element-boundary integral formulation for scattering and radiation by two- and three-dimensional composite structures is presented. In contrast to other hybrid techniques involving the finite element method, the proposed one is in principle exact and can be implemented using a low O(N) storage. This is of particular importance for large scale applications and is a characteristic of the boundary chosen to terminate the finite element mesh, usually as close to the structure as possible. A certain class of these boundaries lead to convolutional boundary integrals which can be evaluated via the fast Fourier transform (FFT) without a need to generate a matrix; thus, retaining the O(N) storage requirement. The paper begins with a general description of the method. A number of two- and three-dimensional applications are then given, including numerical computations which demonstrate the method's accuracy, efficiency, and capability.
File Size	1029216
Page Count	39
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19910011046
Archival Resource Key	ark:/13960/t0tr0t956
Language	English
Publisher Date	1991-03-01
Access Restriction	Open
Subject Keyword	Communications And Radar Finite Element Method Integral Equations Electromagnetic Scattering Electromagnetic Radiation Boundary Integral Method Computational Grids Composite Structures Three Dimensional Composites Fast Fourier Transformations Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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