A static condensation reduced basis element method: Complex problems

DBP Huynh, DJ Knezevic, AT Patera - Computer Methods in Applied …, 2013 - Elsevier
We extend the static condensation reduced basis element (scRBE) method to treat the class
of parametrized complex Helmholtz partial differential equations. The main ingredients are …

A new approach to solve the inverse scattering problem for waves: combining the TRAC and the adaptive inversion methods

M De Buhan, M Kray - Inverse Problems, 2013 - iopscience.iop.org
The aim of this paper is to propose a new method to solve the inverse scattering problem.
This method works directly in the time-dependent domain, using the wave equation and …

Coupling of Dirichlet-to-Neumann boundary condition and finite difference methods in curvilinear coordinates for multiple scattering

S Acosta, V Villamizar - Journal of Computational Physics, 2010 - Elsevier
The applicability of the Dirichlet-to-Neumann technique coupled with finite difference
methods is enhanced by extending it to multiple scattering from obstacles of arbitrary shape …

[HTML][HTML] On surface radiation conditions for an ellipse

M Medvinsky, E Turkel - Journal of Computational and Applied …, 2010 - Elsevier
We compare several On Surface Radiation Boundary Conditions in two dimensions, for
solving the Helmholtz equation exterior to an ellipse. We also introduce a new boundary …

Time-reversed absorbing condition: application to inverse problems

F Assous, M Kray, F Nataf, E Turkel - Inverse Problems, 2011 - iopscience.iop.org
The aim of this paper is to introduce time-reversed absorbing conditions in time-reversal
methods. They enable one to'recreate the past'without knowing the source which has …

Enhanced conformal perfectly matched layers for Bernstein–Bézier finite element modelling of short wave scattering

A El Kacimi, O Laghrouche, D Ouazar… - Computer Methods in …, 2019 - Elsevier
The aim of this paper is to accurately solve short wave scattering problems governed by the
Helmholtz equation using the Bernstein–Bézier Finite Element method (BBFEM), combined …

Standard and phase reduced isogeometric on-surface radiation conditions for acoustic scattering analyses

X Antoine, T Khajah - Computer Methods in Applied Mechanics and …, 2022 - Elsevier
This paper is devoted to the Non-Uniform Rational B-Spline Isogeometric analysis of the On-
Surface Radiation Condition (OSRC) method for solving two-and three-dimensional time …

Compact high order schemes with gradient-direction derivatives for absorbing boundary conditions

D Gordon, R Gordon, E Turkel - Journal of Computational Physics, 2015 - Elsevier
We consider several compact high order absorbing boundary conditions (ABCs) for the
Helmholtz equation in three dimensions. A technique called “the gradient method”(GM) for …

High-fidelity real-time simulation on deployed platforms

DBP Huynh, DJ Knezevic, JW Peterson, AT Patera - Computers & Fluids, 2011 - Elsevier
We present a certified reduced basis method for high-fidelity real-time solution of
parametrized partial differential equations on deployed platforms. Applications include in …

A general approach for high order absorbing boundary conditions for the Helmholtz equation

A Zarmi, E Turkel - Journal of Computational Physics, 2013 - Elsevier
When solving a scattering problem in an unbounded space, one needs to implement the
Sommerfeld condition as a boundary condition at infinity, to ensure no energy penetrates the …