Transparent grid termination (TGT) for finite difference time domain (FD-TD) electromagnetic field computation in one, two, and three dimensions
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Authors
Wang, Kewjin
Subjects
Advisors
Lebaric, Jovan
Date of Issue
1995-09
Date
September 1995
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
In order to solve FD-TD electromagnetic radiation and scattering problems in free space, the computational grid should be truncated at some finite distance to simulate the solution for an infinitely large grid. One way to emulate an infinite grid is to absorb outgoing waves incident onto the grid boundary such that there is no reflection back into the grid. Waves incident to the boundary must 'exit' the grid boundary without affecting the solution within the grid. Based on this idea, this thesis develops Transparent Grid Termination (TGT) in 1-D, 2-D and 3-D as an aDsorbing boundary. TGT performance is compared with a very large grid for which reflections do not return to the computational domain within the observation time window.
Type
Thesis
Description
Series/Report No
Department
Systems Engineering (SE)
Organization
Identifiers
NPS Report Number
Sponsors
Funder
NA
Format
137 p.
Citation
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.