Efficient boundary integral solution for acoustic wave scattering by irregular surfaces
Accepted version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Rath Spivack, O
Spivack, Mark https://orcid.org/0000-0002-1876-950X
Abstract
The left-right operator splitting method is studied for the efficient calculation of acoustic fields scattered by arbitrary rough surfaces. Here the governing boundary integral is written as a sum of left- and right-going components, and the solution expressed as an iterative series, expanding about the predominant direction of propagation. Calculation of each term is computationally inexpensive both in time and memory, and the field is often accurately captured using one or two terms. The convergence and accuracy are examined by comparison with exact solution for smaller problems, and a series of much larger problems are tackled. The method is also immediately applicable to other scatterers such as waveguides, of which examples are given.
Description
Keywords
Rough surface, Acoustic wave scattering, Helmholtz integral equation, Operator splitting
Journal Title
Engineering Analysis with Boundary Elements
Conference Name
Journal ISSN
0955-7997
1873-197X
1873-197X
Volume Title
83
Publisher
Elsevier BV