30 citations · 43 across the 4 of their papers we have counts for
4 papers
A new interpolated pseudodifferential preconditioner for the Helmholtz equation in heterogeneous media
Sebastian Acosta, Tahsin Khajah, Benjamin Palacios
This paper introduces a new pseudodifferential preconditioner for the Helmholtz equation in variable media with absorption. The pseudodifferential operator is associated with the m…
Method of virtual sources using on-surface radiation conditions for the Helmholtz equation
Sebastian Acosta, Tahsin Khajah
We develop a novel method of virtual sources to formulate boundary integral equations for exterior wave propagation problems. However, by contrast to classical boundary integral fo…
Highly accurate acoustic scattering: Isogeometric Analysis coupled with local high order Farfield Expansion ABC
Tahsin Khajah, Vianey Villamizar
This work is concerned with a unique combination of high order local absorbing boundary conditions (ABC) with a general curvilinear Finite Element Method (FEM) and its implementati…
Isogeometric finite element analysis of time-harmonic exterior acoustic scattering problems
Tahsin Khajah, Xavier Antoine, Stéphane P. A. Bordas
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…