NON-LOCAL BOUNDARY CONDITONS FOR 1-WAY WAVE PROPAGATION

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Authors
  1. Thomson, D.J.
  2. Brooke, G.H.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
In sonar (radar) parabolic equation (PE) solvers, the downgoing (upgoing) radiation condition is usually approximated by appending an absorbing layer to the computational mesh. Alternatively, non-local boundary conditions (NLBCs) can be used that exactly transform the semi-infinite PE problem with a radiation condition at infinity into an equivalent PE problem in a bounded domain. Here we reivew two schemes for deriving and incorporating NLBC's into PE codes that are solved by finite-difference methods.
Keywords
Non Local Boundary Conditions
Date of publication
01 Jun 1988
Number of Pages
5
DSTKIM No
98-00627
CANDIS No
507460
Format(s):
Hardcopy;Document Image stored on Optical Disk

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