Accession Number:

ADA440431

Title:

Numerical Studies of Acoustic Propagation in Shallow Water

Descriptive Note:

Final rept. Oct 2003-Sep 2004

Corporate Author:

WASHINGTON STATE UNIV PULLMAN WA SCHOOL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE

Personal Author(s):

Report Date:

2005-11-13

Pagination or Media Count:

7.0

Abstract:

Equations were derived which rigorously codify the propagation of fields in finite-difference time-domain FDTD grids. These equations were then used to construct a perfect total-fieldscattered field boundary which is used to inject energy into the grid. Algorithms were developed to enhance the modeling of material boundaries in the FDTD method the accuracy of various FDTD or FDTD-like algorithms were rigorously studied an FDTD algorithm was developed which is theoretically exact i.e., provided the grid is infinite the accuracy is limited only by the finite precision of computers various computer programs related to the FDTD method were written and information and programs were disseminated via journal publications, conference presentations, and the Web.

Subject Categories:

  • Numerical Mathematics
  • Theoretical Mathematics
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE