Modeling arbitrarily directed slots that are narrow both in width and depth with regard to the FDTD spatial cell. [Finite Difference-Time Domain (TDTD)]
Conference
·
OSTI ID:5558194
The Hybrid Thin-Slot Algorithm (HTSA) integrates a transient integral-equation solution for an aperture in an infinite plane into a finite-difference time-domain (FDTD) code. The technique was introduced for linear apertures and was extended to include wall loss and lossy internal gaskets. A general implementation for arbitrary thin slots is briefly described here. The 3-D FDTD-code TSAR was selected for the implementation. The HTSA does not provide universal solutions to the narrow slot problem, but has merits appropriate for particular applications. The HTSA is restricted to planar slots, but can solve the important case that both the width and depth of the slot are narrow compared to the FDTD spatial cell. IN addition, the HTSA is not bound to the FDTD discrete spatial and time increments, and therefore, high-resolution solutions for the slot physics are possible. The implementation of the HTSA into TSAR is based upon a slot data file'' that includes the cell indices where the desired slots are exist within the FDTD mesh. For an HTSA-defined slot, the wall region local to the slot is shorted, and therefore, to change the slot's topology simply requires altering the file to include the desired cells. 7 refs.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5558194
- Report Number(s):
- SAND-91-2910C; CONF-920750--3; ON: DE92008015
- Country of Publication:
- United States
- Language:
- English
Similar Records
Modeling arbitrarily directed slots that are narrow both in width and depth with regard to the FDTD spatial cell
General implementation of thin-slot algorithms into the finite-difference time-domain code, TSAR, based on a slot data file
Hybrid thin-slot algorithm for the analysis of narrow apertures in finite-difference time-domain calculations
Conference
·
Mon Dec 30 23:00:00 EST 1991
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OSTI ID:10123975
General implementation of thin-slot algorithms into the finite-difference time-domain code, TSAR, based on a slot data file
Technical Report
·
Sat Jun 01 00:00:00 EDT 1991
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OSTI ID:5755197
Hybrid thin-slot algorithm for the analysis of narrow apertures in finite-difference time-domain calculations
Technical Report
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Sun Dec 31 23:00:00 EST 1989
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OSTI ID:7070223
Related Subjects
661300* -- Other Aspects of Physical Science-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ALGORITHMS
APERTURES
DIFFERENTIAL EQUATIONS
ELECTROMAGNETIC FIELDS
EQUATIONS
FINITE DIFFERENCE METHOD
FUNCTIONS
GREEN FUNCTION
INTEGRAL EQUATIONS
ITERATIVE METHODS
MATHEMATICAL LOGIC
MAXWELL EQUATIONS
NUMERICAL SOLUTION
OPENINGS
PARTIAL DIFFERENTIAL EQUATIONS
WALLS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ALGORITHMS
APERTURES
DIFFERENTIAL EQUATIONS
ELECTROMAGNETIC FIELDS
EQUATIONS
FINITE DIFFERENCE METHOD
FUNCTIONS
GREEN FUNCTION
INTEGRAL EQUATIONS
ITERATIVE METHODS
MATHEMATICAL LOGIC
MAXWELL EQUATIONS
NUMERICAL SOLUTION
OPENINGS
PARTIAL DIFFERENTIAL EQUATIONS
WALLS