Accession Number:

ADA379806

Title:

A Three-Dimensional Finite Difference Time Domain - Perfectly Matched Layer Algorithm Based on Piecewise-Linear Approximation for Linear Dispersive Media

Descriptive Note:

Final rept. 1 Oct 1999-24 Feb 2000

Corporate Author:

AIR FORCE RESEARCH LAB KIRTLAND AFB NMDIRECTED ENERGY DIRECTORATE

Personal Author(s):

• Yakura, S. J.
• Dietz, David

Report Date:

2000-02-24

Pagination or Media Count:

22.0

Abstract:

Starting with the unsplit-field uniaxial Perfectly Matched Layer PML formulation, a second-order accurate Finite Difference Time Domain FDTD - PML algorithm is obtained using the piecewise-linear approximation. Use of the FDTD-PML algorithm results in the proper long time limit behavior where the electric field value decreases exponentially to zero inside a PML medium long after an electromagnetic pulse is incident on the PML medium. The behavior is consistent with the other PML algorithm, such as Gedneys two-step approach.

Descriptors:

• *ELECTRIC FIELDS
• COMPUTERIZED SIMULATION
• FOURIER TRANSFORMATION
• TAYLORS SERIES
• ELECTROMAGNETIC WAVE PROPAGATION
• FINITE DIFFERENCE THEORY
• APPROXIMATION(MATHEMATICS)
• MAXWELLS EQUATIONS
• TIME DOMAIN
• ELECTROMAGNETIC PULSES

Subject Categories:

• Electricity and Magnetism
• Operations Research

Distribution Statement:

APPROVED FOR PUBLIC RELEASE