Isogeometric finite element analysis of time-harmonic exterior acoustic scattering problems

New paper with Tahsin Khajah and Xavier Antoine. 

https://arxiv.org/abs/1610.01694

Isogeometric finite element analysis of time-harmonic exterior acoustic scattering problems

Tahsin Khajah, Xavier Antoine, Stéphane P.A. Bordas

(Submitted on 6 Oct 2016)

We present an isogeometric analysis of time-harmonic exterior acoustic problems. The infinite space is truncated by a fictitious boundary and (simple) absorbing boundary conditions are applied. The truncation error is included in the exact solution so that the reported error is an indicator of the performance of the isogeometric analysis, in particular of the related pollution error. Numerical results performed with high-order basis functions (third or fourth orders) showed no visible pollution error even for very high frequencies. This property combined with exact geometrical representation makes isogeometric analysis a very promising platform to solve high-frequency acoustic problems.

Subjects: Computational Physics (physics.comp-ph); Numerical Analysis (cs.NA); Numerical Analysis (math.NA)

Cite as: arXiv:1610.01694 [physics.comp-ph]

  (or arXiv:1610.01694v1 [physics.comp-ph] for this version)

Submission history

From: Tahsin Khajah [view email]