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Title: DSI3D - RCS user manual

Abstract

The DSI3D-RCS code is designed to numerically evaluate radar cross sections on complex objects by solving Maxwell`s curl equations in the time-domain and in three space dimensions. The code has been designed to run on the new parallel processing computers as well as on conventional serial computers. The DSI3D-RCS code is unique for the following reasons: Allows the use of unstructured non-orthogonal grids, allows a variety of cell or element types, reduces to be the Finite Difference Time Domain (FDTD) method when orthogonal grids are used, preserves charge or divergence locally (and globally), is conditionally stable, is selectively non-dissipative, and is accurate for non-orthogonal grids. This method is derived using a Discrete Surface Integration (DSI) technique. As formulated, the DSI technique can be used with essentially arbitrary unstructured grids composed of convex polyhedral cells. This implementation of the DSI algorithm allows the use of unstructured grids that are composed of combinations of non-orthogonal the use of unstructured grids that are composed of combinations of non-orthogonal hexahedrons, tetrahedrons, triangular prisms and pyramids. This algorithm reduces to the conventional FDTD method when applied on a structured orthogonal hexahedral grid.

Authors:
; ;  [1]
  1. and others
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
120885
Report Number(s):
UCRL-ID-121835
ON: DE96000828; TRN: 95:007838
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 23 Aug 1995
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; MAXWELL EQUATIONS; NUMERICAL SOLUTION; D CODES; COMPUTER PROGRAM DOCUMENTATION; PARALLEL PROCESSING; ALGORITHMS; COMPUTERIZED SIMULATION

Citation Formats

Madsen, N, Steich, D, and Cook, G. DSI3D - RCS user manual. United States: N. p., 1995. Web. doi:10.2172/120885.
Madsen, N, Steich, D, & Cook, G. DSI3D - RCS user manual. United States. https://doi.org/10.2172/120885
Madsen, N, Steich, D, and Cook, G. Wed . "DSI3D - RCS user manual". United States. https://doi.org/10.2172/120885. https://www.osti.gov/servlets/purl/120885.
@article{osti_120885,
title = {DSI3D - RCS user manual},
author = {Madsen, N and Steich, D and Cook, G},
abstractNote = {The DSI3D-RCS code is designed to numerically evaluate radar cross sections on complex objects by solving Maxwell`s curl equations in the time-domain and in three space dimensions. The code has been designed to run on the new parallel processing computers as well as on conventional serial computers. The DSI3D-RCS code is unique for the following reasons: Allows the use of unstructured non-orthogonal grids, allows a variety of cell or element types, reduces to be the Finite Difference Time Domain (FDTD) method when orthogonal grids are used, preserves charge or divergence locally (and globally), is conditionally stable, is selectively non-dissipative, and is accurate for non-orthogonal grids. This method is derived using a Discrete Surface Integration (DSI) technique. As formulated, the DSI technique can be used with essentially arbitrary unstructured grids composed of convex polyhedral cells. This implementation of the DSI algorithm allows the use of unstructured grids that are composed of combinations of non-orthogonal the use of unstructured grids that are composed of combinations of non-orthogonal hexahedrons, tetrahedrons, triangular prisms and pyramids. This algorithm reduces to the conventional FDTD method when applied on a structured orthogonal hexahedral grid.},
doi = {10.2172/120885},
url = {https://www.osti.gov/biblio/120885}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {8}
}