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math.NA2025
FloquetBloch analysis of wave propagation with time-periodic coefficients
Jörg Nick, Ralf Hiptmair, Habib Ammari
This paper presents a numerical investigation of acoustic wave propagation in an obstacle with periodically time-modulated material parameters. We focus on the numerical constructi…
math.NA2024
Parsimonious convolution quadrature
Jens M. Melenk, Jörg Nick
We present a method to rapidly approximate convolution quadrature (CQ) approximations, based on a piecewise polynomial interpolation of the Laplace domain operator, which we call t…