Local strategies for improving the conditioning of the plane-wave Ultra-Weak Variational Formulation

•Numerical solution of the wave equation in the frequency domain.•Use of wave-based methods to avoid dispersion.•Cheap treatment of plane-wave discretization ill-conditioning.•Robust and efficient numerical solution of the Helmholtz equation.•Methods avoiding spurious resonances induced by the use o...

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Veröffentlicht in:	Journal of computational physics 2021-09, Vol.441, p.110449, Article 110449
Hauptverfasser:	Barucq, Hélène, Bendali, Abderrahmane, Diaz, Julien, Tordeux, Sébastien
Format:	Artikel
Sprache:	eng
Schlagworte:	Computational physics Helmholtz Helmholtz equations Ill-conditioned problems (mathematics) Mathematical analysis Mathematics Matrices (mathematics) Numerical Analysis Plane waves Preconditioning SVD UWVF
Online-Zugang:	Volltext
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