High frequency analysis of the efficiency of a local approximate DtN2 boundary condition for prolate spheroidal-shaped boundaries

Abstract : The performance of the second order local approximate DtN boundary condition, suggested by the authors in a previous work, is investigated analytically when employed for solving high-frequency exterior Helmholtz problems. This study proves that, in the high frequency regime, the reflected waves at the artificial boundary decay faster than $1/{(ka)^{15/8}}$ where $k$ is the wavenumber and $a$ is the semi-major axis of this boundary. Numerical results illustrate the accuracy and the efficiency of the proposed absorbing boundary condition when used for solving acoustic scattering problems in a domain-based formulation.
Document type :
Reports
Complete list of metadatas

Cited literature [20 references]  Display  Hide  Download

https://hal.inria.fr/inria-00438845
Contributor : Hélène Barucq <>
Submitted on : Wednesday, December 16, 2009 - 2:09:39 PM
Last modification on : Wednesday, July 24, 2019 - 4:02:06 PM
Long-term archiving on : Saturday, November 26, 2016 - 4:25:33 PM

File

RR-7137.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : inria-00438845, version 2

Citation

Hélène Barucq, Rabia Djellouli, Anne-Gaëlle Saint-Guirons. High frequency analysis of the efficiency of a local approximate DtN2 boundary condition for prolate spheroidal-shaped boundaries. [Research Report] RR-7137, INRIA. 2009, pp.38. ⟨inria-00438845v2⟩

Share

Metrics

Record views

590

Files downloads

633