Abstract
A new artificial boundary condition for two-dimensional acoustic scattering problems is constructed in this paper. It is designed from the principal symbol of the Dirichlet-to-Neumann map so that both the propagating and evanescent fields are properly modeled. In the high-frequency regime, the new artificial boundary condition can be used as an on-surface radiation condition for efficient approximation of the wave field. The accuracy and efficiency of our method are demonstrated in numerical examples. © 2005 Elsevier B.V. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 4060-4074 |
| Journal | Computer Methods in Applied Mechanics and Engineering |
| Volume | 195 |
| Issue number | 33-36 |
| DOIs | |
| Publication status | Published - 1 Jul 2006 |
Research Keywords
- Acoustic
- Far-field patterns
- Non-reflecting boundary condition
- on-surface radiation condition
- Scattering
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